Birth rate

The birth rate (technically, births/population rate) is the total number of live births per 1,000 in a population in a year or period.[1] The rate of births in a population is calculated in several ways: live births from a universal registration system for births, deaths, and marriages; population counts from a census, and estimation through specialized demographic techniques. The birth rate (along with mortality and migration rate) are used to calculate population growth.

The crude birth rate is the number of live births per year per 1,000 mid-year population.[2][3] Another term used interchangeably with birth rate is natality.[4] When the crude death rate is subtracted from the crude birth rate, the result is the rate of natural increase (RNI).[5] This is equal to the rate of population change (excluding migration).[5]

The total (crude) birth rate (which includes all births)—typically indicated as births per 1,000 population—is distinguished from an age-specific rate (the number of births per 1,000 persons in an age group).[6] The first known use of the term "birth rate" in English occurred in 1859.[7]

World historical and projected crude birth rates (1950–2050)
UN, normal variant, 2009 rev.[8]
Years CBR Years CBR
1950–1955 37.2 2000–2005 21.2
1955–1960 35.3 2005–2010 20.3
1960–1965 34.9 2010–2015 19.4
1965–1970 33.4 2015–2020 18.2
1970–1975 30.8 2020–2025 16.9
1975–1980 28.4 2025–2030 15.8
1980–1985 27.9 2030–2035 15.0
1985–1990 27.3 2035–2040 14.5
1990–1995 24.7 2040–2045 14.0
1995–2000 22.5 2045–2050 13.4

The average global birth rate is 18.5 births per 1,000 total population in 2016.[9] The death rate is 7.8 per 1,000 per year. The RNI is thus 1.06 percent. In 2012 the average global birth rate was 19.611 according to the World Bank[10] and 19.15 births per 1,000 total population according to the CIA,[11] compared to 20.09 per 1,000 total population in 2007.[12]

The 2016 average of 18.6 births per 1,000 total population is estimated to be about 4.3 births/second or about 256 births/minute for the world.[9]

Countries by Birth Rate in 2017
Countries by crude birth rate (CBR) in 2017.

Political issues

Familiy Planning Ethiopia (bad effects)
Placard showing negative effects of lack of family planning and having too many children and infants (Ethiopia)

The birth rate is an issue of concern and policy for national governments. Some (including those of Italy and Malaysia) seek to increase the birth rate with financial incentives or provision of support services to new mothers. Conversely, other countries have policies to reduce the birth rate (for example, China's one-child policy which was in effect from 1978 to 2015). Policies to increase the crude birth rate are known as pro-natalist policies, and policies to reduce the crude birth rate are known as anti-natalist policies. Non-coercive measures such as improved information on birth control and its availability have achieved good results in countries such as Iran and Bangladesh.

There has also been discussion on whether bringing women into the forefront of development initiatives will lead to a decline in birth rates. In some countries, government policies have focused on reducing birth rates by improving women's rights, sexual and reproductive health. Typically, high birth rates are associated with health problems, low life expectancy, low living standards, low social status for women and low educational levels. Demographic transition theory postulates that as a country undergoes economic development and social change its population growth declines, with birth rates serving as an indicator.

At the 1974 World Population Conference in Bucharest, Romania, women's issues gained considerable attention. Family programs were discussed, and 137 countries drafted a World Population Plan of Action. As part of the discussion, many countries accepted modern birth control methods such as the birth control pill and the condom while opposing abortion. Population and the need to incorporate women into the discourse were discussed; it was agreed that improvements in women's status and initiatives in defense of reproductive health and freedom, the environment, and sustainable socioeconomic development were needed.

Birth rates ranging from 10–20 births per 1,000 are considered low, while rates from 40–50 births per 1,000 are considered high.[13] There are problems associated with both extremes. High birth rates may stress government welfare and family programs. Additional problems faced by a country with a high birth rate include educating a growing number of children, creating jobs for these children when they enter the workforce, and dealing with the environmental impact of a large population. Low birth rates may stress the government to provide adequate senior welfare systems and stress families who must support the elders themselves. There will be fewer children (and a working-age population) to support an aging population.

Population control

In the 20th century, several authoritarian governments have sought either to increase or to decrease the birth rates, sometimes through forceful intervention. One of the most notorious natalist policies is that which occurred in communist Romania in the period of 1967-1990 during communist leader Nicolae Ceaușescu, who adopted a very aggressive natalist policy which included outlawing abortion and contraception, routine pregnancy tests for women, taxes on childlessness, and legal discrimination against childless people. This period has later been depicted in movies and documentaries (such as 4 Months, 3 Weeks and 2 Days, Children of the Decree). These policies temporarily increased birth rates for a few years, but this was followed by a later decline due to an increased use of illegal abortion.[14][15] Ceaușescu's policy resulted in over 9,000 women who died due to illegal abortions,[16] large numbers of children put into Romanian orphanages by parents who couldn't cope with raising them, street children in the 1990s (when many orphanages were closed and the children ended on the streets), and overcrowding in homes and schools. The irony of Ceaușescu's aggressive natalist policy was a generation that may not have been born would eventually lead the Romanian Revolution which would overthrow and have him executed.[17]

In stark opposition with Ceaușescu's natalist policy was China's one child policy, in effect from 1978 to 2015, which included abuses such as forced abortions.[18] This policy has also been deemed responsible for the common practice of sex selective abortion which led to an imbalanced sex ratio in the country. Given strict family-size limitations and a preference for sons, girls have become unwanted in China because they are considered as depriving the parents of the possibility of having a son. With the progress of prenatal sex-determination technologies and induced abortion, the one-child policy gradually turned into a one-son policy.[19]

In many countries, the steady decline in birth rates over the past decades can be greatly attributed to the significant gains in women's freedoms, such as tackling the phenomenon of forced marriage and child marriage, education for women and increased socioeconomic opportunities. Women of all economic, social, religious and educational persuasions are choosing to have fewer children as they are gaining more control over their own reproductive rights. Apart from more children living into their adult years, women are often more ambitious to take up work, education and living their own lives rather than just a life of reproduction.[20] Birth rates in third world countries have fallen due to the introduction of family planning clinics.

In Bangladesh, one of the poorest countries in the world, women are on average having two children less often than they did before 1999, according to Australian demographer Jack Caldwell. Bangladeshi women eagerly took up contraceptives, like condoms and the pill, on offer from a foreign population agency in a study by the World Bank carried out in 1994. The study proved that family planning could be carried out and accepted practically anywhere. Caldwell also believes that agricultural improvements led to the need for less labour. Children not needed to plough the fields would be of surplus and require some education, so in turn, smaller families, and with smaller families, women are able to work and have greater ambitions.[21] Other examples of non-coercive family planning policies are IEthiopia, Thailand and Indonesia.

Myanmar, a country which until 2011 was controlled by an austere military junta, intent on controlling every aspect of its population's lives. The military generals wanted the country's population doubled. In their view, the women's job was to produce babies to power the country's labour force, so family planning was vehemently opposed. The women of Burma opposed this policy, and Peter McDonald of the Australian National University argues that this gave rise to a black market trade in contraception, all smuggled from neighbouring Thailand.[22]

In 1990, five years after the war ended, Iran saw the fastest recorded drop in fertility in world history. Revolution gave way to consumerism and westernization. With TVs and cars came condoms and the pill. A generation of women expected to produce soldiers in the fight against Iraq was met by the next generation of women who had a choice to enjoy some new found luxuries. In the years during the Iran/Iraq war, the women of Iran averaged about 8 children each, a ratio the hard line Islamic President Mahmoud Ahmadinejad wanted to revive. As of 2010, the birth rate of Iran is 1.7 babies per woman. Some may say this is a triumph of western values, which give women more freedoms, over an Islamic ruled state.[23]

Islamic clerics are having less influence over women in other Muslim countries also. In the past 30 years Turkey's fertility rate of children per woman has dropped from 4.07 to 2.08. Tunisia has dropped from 4.82 to 2.14 and Morocco from 5.4 to 2.52 children per woman.[24]

Latin America, of predominately Catholic faith, has seen the same trends in falling fertility rates. Brazilian women are having half the children they were 25 years ago with a rate of 2.2 children per woman. The Vatican is having less influence over women in other hard-line Catholic countries also. Mexico, El Salvador, Ecuador, Nicaragua, Colombia, Venezuela and Peru have all seen significant drops in fertility in the same period, all going from over six to less than three children per woman. Forty percent of married Brazilian women are choosing to get sterilised after having children, but this may be a compromise as it is only one confession of sin to the church. Some may say this is a triumph of Western values, which give women more freedoms, over a Catholic state.[25]

National birth rates

According to the CIA's The World Factbook,[26] the country with the highest birth rate is Niger at 6.49 children born per woman and the country with the lowest birth rate is Taiwan, at 1.13 children born per woman.

Compared with the 1950s (when the birth rate was 36 per thousand), as of 2011, the world birth rate has declined by 16 per thousand.[27]

As of 2017, Niger has the highest birth rate in the world with 49.443 per thousand people.[28] Japan has one of the lowest birth rates in the world with 8 per thousand people.[29] While in Japan there are 126 million people[30] and in Niger 21 million,[31] both countries had around 1 million babies born in 2016.

Sub-Saharan Africa

The region of Sub-Saharan Africa has the highest birth rate in the world. As of 2016, Niger, Mali, Uganda, Zambia, and Burundi have the highest birth rates in the world.[32] This is part of the fertility-income paradox, as these countries are very poor, and it may seem counter-intuitive for families there to have so many children. The inverse relationship between income and fertility has been termed a demographic-economic "paradox" by the notion that greater means would enable the production of more offspring as suggested by the influential Thomas Malthus.[33]


Afghanistan has the 11th highest birth rate in the world, and also the highest birth rate of any non-African country (as of 2016).[32] The rapid population growth of Afghanistan is considered a problem by preventing population stabilization, and affecting maternal and infant health.[34][35] Reasons for large families include tradition, religion, the low status of women and the cultural desire to have several sons.[34][36]


Historically, Australia has had a relatively low fertility rate, reaching a high of 3.14 births per woman in 1960.[37] This was followed by a decline which continued until the mid-2000, when a one off cash incentive was introduced to reverse the decline. In 2004, the then Howard government introduced a non-means tested 'Maternity Payment' to parents of every newborn as a substitute to maternity leave. The payment known as the 'Baby Bonus' was A$3000 per child. This rose to A$5000 which was paid in 13 instalments.[38]

At a time when Australia's unemployment was at a 28-year low of 5.2%, the then Treasurer Peter Costello stated there was opportunity to go lower. With a good economic outlook for Australia, Costello held the view that now was a good time to expand the population, with his famous quote that every family should have three children "one for mum, one for dad and one for the country".[39] Australia's fertility rate reached a peak of 1.95 children per woman in 2010, a 30-year high,[37] although still below replacement rate.

Phil Ruthven of the business information firm IBISWorld believes the spike in fertility was more about timing and less about monetary incentives. Generation X was now aged 25 to 45 years old. With numerous women putting pregnancies off for a few years for the sake of a career, many felt the years closing in and their biological clocks ticking.[40]

On 1 March 2014, the baby bonus was replaced with Family Tax Benefit A. By then the baby bonus had left its legacy on Australia.[41]

In 2016, Australia's fertility rate has only decreased slightly to 1.91 children per woman.[37]


Canada's birthrate is 1.60 births per woman as of 2015, more closely resembling a European country than Australia or the USA.


France has been successful in increasing fertility rates from the low levels seen in the late 1980s, after a continuous fall in the birth rate.[42] In 1994, the total fertility rate was as low as 1.66, but perhaps due to the active family policy of the government in the mid 1990s, it has increased, and maintained an average of 2.0 average from 2008 until 2015.[42]

France has embarked on a strong incentive policy based on two key measures to restore the birth rate: family benefits (les allocations familiales) and a family-coefficient of income tax (le quotient familial).[43] Since the end of World War II, early family policy in France has been based on a family tradition that requires children to support multi-child family, so that a third child enables a multi-child family to benefit from family allowances and income tax exemptions.[43] This is intended to allow families with three children to enjoy the same living standards as households without children.[43]

In particular, the French income taxation system is structured so that families with children receive tax breaks greater than single adults without children.[44] This income tax imposition system is known as the family coefficient of income tax.[44] A characteristic of the family factor is that households with a large number of children, even if they are at the same standard of living, can receive more tax exemption benefits.[44]

Since the 1970s, the focus has been on supporting families who are vulnerable such as single parent families and the children of a poor family in order to ensure equality of opportunity.[45] In addition, as many women began to participate in the labor market, the government introduced policies of financial support for childcare leave as well as childcare facilities.[45] In 1994, the government expanded the parent education allowance (l'allocation parentale d'éducation) for women with two children to ensure freedom of choice and reduce formal unemployment in order to promote family well-being and women's labor participation.[45]

There are also:

  • an infant child care allowance, family allowance and family allowance for multichild family, and a multi-element family pension scheme.[46]
  • a medical insurance system that covers all medical expenses, hospitalization costs, and medical expenses incurred after six months of pregnancy as 100% of the national health insurance in the national social security system, and the statutory leave system during pregnancy.[46]


The birth rate in Germany is only 8.3 per thousand—so low that the UK and France (which have smaller populations) had more births in the past year.[47]


In Europe as of July 2011, Ireland's birth rate was 16.5 per 1000 (3.5 percent higher than the next-ranked country, the UK).[48]


Japan Population by Age 1920-2010 with Projection to 2060
Historic population of Japan (1920-2010) with projected population (2011-2060).

As of 2016, Japan has the third lowest crude birth rate (i.e. not allowing for the population's age distribution) in the world, with only Saint Pierre and Miquelon and Monaco having lower crude birth rates.[32] Japan has an unbalanced population with many elderly but few young people, and this is projected to be more extreme in the future, unless there are major changes. An increasing number of Japanese people are staying unmarried: between 1980 and 2010, the percentage of the population who had never married increased from 22% to almost 30%, even as the population continued to age, and by 2035 one in four people will not marry during their childbearing years.[49] The Japanese sociologist Masahiro Yamada coined the term "parasite singles" for unmarried adults in their late 20s and 30s who continue to live with their parents.[50]


In August 2011 Taiwan's government announced that its birth rate declined in the previous year, despite the fact that the government implemented approaches to encourage fertility.[51]

United Kingdom

In July 2011, the UK's Office for National Statistics (ONS) announced a 2.4 percent increase in live births in the UK in 2010.[52] This is the highest birth rate in the UK in 40 years.[52] However, the UK record year for births and birth rate remains 1920 (when the ONS reported over 957,000 births to a population of "around 40 million").[53]

United States

According to U.S. federal-government data released in March 2011, births fell four percent from 2007 to 2009 (the largest drop in the U.S. for any two-year period since the 1970s).[54] Births have declined for three consecutive years, and are now seven percent below the 2007 peak.[55] This drop has continued through 2010, according to data released by the U.S. National Center for Health Statistics in June 2011.[56] Experts have suggested that this decline is a reflection of unfavorable economic conditions.[57] The connection between birth rate and economic conditions stems from the fact that US birth rates have fallen to levels comparable to those during the Great Depression during the 1930s.[58] A state-level look at fertility, based on a report published by the Pew Research Center in October 2011, points out the strong correlation between lower birth rates and economic distress. In 2008, North Dakota had the nation's lowest unemployment rate (3.1 percent) and was the only state to show an increase (0.7 percent) in its birth rate. All other states either remained the same or declined.

The research center's study also found evidence of a correlation between economic difficulties and fertility decline by race and ethnicity. Hispanics (particularly affected by the recession) have experienced the largest fertility decline, particularly compared to Caucasians (who have less economic hardship and a smaller decline in fertility). In 2008–2009 the birth rate declined 5.9 percent for Hispanic women, 2.4 percent for African American women and 1.6 percent for white women. The relatively large birth rate declines among Hispanics mirror their relatively large economic declines, in terms of jobs and wealth. According to the statistics using the data from National Centre for Health Statistics and U.S. Census Bureau, from 2007 to 2008, the employment rate among Hispanics declined by 1.6 percentage points, compared with declines of 0.7 points for whites. The unemployment rate shows a similar pattern—unemployment among Hispanics increased 2.0 percentage points from 2007 to 2008, while for whites the increase was 0.9 percentage points. A recent report from the Pew Hispanic Center revealed that Hispanics have also been the biggest losers in terms of wealth since the beginning of the recession, with Hispanic households losing 66% of their median wealth from 2005 to 2009. In comparison, black households lost 53% of their median wealth and white households lost only 16%. In facts, Hispanics, who have been hit the hardest in terms of employment and wealth, have also experienced the largest fertility declines since the onset of the recession because the birth rate declines of Hispanic women is the highest while comparing to the White women. Since, the unemployment rate has been increasing, the birth rate decline has been decreasing.[59]

Other factors (such as women's labor-force participation, contraceptive technology and public policy) make it difficult to determine how much economic change affect fertility. Research suggests that much of the fertility decline during an economic downturn is a postponement of childbearing, not a decision to have fewer (or no) children; people plan to "catch up" to their plans of bearing children when economic conditions improve. Younger women are more likely than older women to postpone pregnancy due to economic factors, since they have more years of fertility remaining.[60]

In July 2011, the U.S. National Institutes of Health announced that the adolescent birth rate continues to decline.[61] In 2013, teenage birth rates in the U.S. were at the lowest level in U.S. history.[62] Teen birth rates in the U.S. have decreased from 1991 through 2012 (except for an increase from 2005–2007).[62] The other aberration from this otherwise-steady decline in teen birth rates is the six percent decrease in birth rates for 15- to 19-year-olds between 2008 and 2009.[62] Despite the decrease, U.S. teen birth rates remain higher than those in other developed nations.[62] Racial differences affect teen birth and pregnancy rates: American Indian/Alaska Native, Hispanic, and non-Hispanic black teen pregnancy rates are more than double the non-Hispanic white teenage birth rate.[63]

States strict in enforcing child support have up to 20 percent fewer unmarried births than states that are lax about getting unmarried dads to pay, the researchers found. Moreover, according to the results, if all 50 states in the United States had done at least as well in their enforcement efforts as the state ranked fifth from the top, that would have led to a 20 percent reduction in out-of-wedlock births.[64]

The United States population growth is at an historical low level as the United States current birth rates are the lowest ever recorded.[65] The low birth rates in the contemporary United States can possibly be ascribed to the recession, which led women to postpone having children and fewer immigrants coming to the US. The current US birth rates are not high enough to maintain the size of the U.S. population, according to The Economist.[66][67]

Factors affecting birth rate

2018 UN Human Development Report
Human Development Index map. Darker is higher. Countries with a higher HDI usually have a lower birth rate, known as the fertility-income paradox.

There are many factors that interact in complex ways, influencing the births rate of a population. Developed countries have a lower birth rate than underdeveloped countries (see Income and fertility). A parent's number of children strongly correlates with the number of children that each person in the next generation will eventually have.[68] Factors generally associated with increased fertility include religiosity,[69] intention to have children,[70] and maternal support.[71] Factors generally associated with decreased fertility include wealth, education,[72] female labor participation,[73] urban residence,[74] intelligence, increased female age, women's rights, access to family planning services and (to a lesser degree) increased male age. Many of these factors however are not universal, and differ by region and social class. For instance, at a global level, religion is correlated with increased fertility, but in the West less so: Scandinavian countries and France are among the least religious in the EU, but have the highest TFR, while the opposite is true about Portugal, Greece, Cyprus, Poland and Spain. (see Religion in the European Union).[75]

Reproductive health can also affect the birth rate, as untreated infections can lead to fertility problems, as can be seen in the "infertility belt" - a region that stretches across central Africa from the United Republic of Tanzania in the east to Gabon in the west, and which has a lower fertility than other African regions.[76][77]

Child custody laws, affecting fathers' parental rights over their children from birth until child custody ends at age 18, may have an effect on the birth rate. U.S. states strict in enforcing child support have up to 20 percent fewer unmarried births than states that are lax about getting unmarried fathers to pay, the researchers found. Moreover, according to the results, if all 50 states in the United States had done at least as well in their enforcement efforts as the state ranked fifth from the top, that would have led to a 20 percent reduction in out-of-wedlock births.[64]

See also

Case studies


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External links

Media related to Birth and death rates at Wikimedia Commons

Bedford County, Pennsylvania

Bedford County is a county located in the U.S. state of Pennsylvania. As of the 2010 census, the population was 49,762. The county seat is Bedford.

Carrying capacity

The carrying capacity of a biological species in an environment is the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water, and other necessities available in the environment.

In population biology, carrying capacity is defined as the environment's maximal load, which is different from the concept of population equilibrium. Its effect on population dynamics may be approximated in a logistic model, although this simplification ignores the possibility of overshoot which real systems may exhibit.

Carrying capacity was originally used to determine the number of animals that could graze on a segment of land without destroying it. Later, the idea was expanded to more complex populations, like humans. For the human population, more complex variables such as sanitation and medical care are sometimes considered as part of the necessary establishment. As population density increases, birth rate often increases and death rate typically decreases. The difference between the birth rate and the death rate is the "natural increase". The carrying capacity could support a positive natural increase or could require a negative natural increase. Thus, the carrying capacity is the number of individuals an environment can support without significant negative impacts to the given organism and its environment. Below carrying capacity, populations typically increase, while above, they typically decrease. A factor that keeps population size at equilibrium is known as a regulating factor. Population size decreases above carrying capacity due to a range of factors depending on the species concerned, but can include insufficient space, food supply, or sunlight. The carrying capacity of an environment may vary for different species and may change over time due to a variety of factors including: food availability, water supply, environmental conditions and living space.

The origins of the term "carrying capacity" are uncertain, with researchers variously stating that it was used "in the context of international shipping" or that it was first used during 19th-century laboratory experiments with micro-organisms. A recent review finds the first use of the term in an 1845 report by the US Secretary of State to the US Senate.

Demographics of American Samoa

This article is about the demographic features of the population of American Samoa, including population density, ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population.

Demographics of French Polynesia

This article is about the demographic features of the population of French Polynesia, including population density, ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population.

Demographics of Ghana

The Demography of Ghana describes the condition and overview of Ghana's population. This article is about the demographic features of the population of Ghana, including population density, ethnicity, education level, health of the populace, religious affiliations and other aspects of the population.

Ghana's population is 25,009,153 (December 2013 estimate).

Demographics of Indonesia

The population of Indonesia according to the 2010 national census was 237.64 million, and it was estimated to reach 255.4 million in 2015. 58% live on the island of Java, the world's most populous island.Despite a fairly effective family planning program that has been in place since 1967, for the decade ending in 2010, Indonesia's population growth was 1.49 percent. At that rate, Indonesia's population is projected to surpass the present population of the United States. Some say family planning should be revitalised based on the 1967 program to avoid Indonesia becoming the world's third most populous country, but this aim has faced a hurdle of religiously-based opinion that to follow family planning is equivalent to not being grateful to God.Indonesia has a relatively young population compared to Western nations, though it is aging as the country's birth rate has slowed and its life expectancy has increased. Indonesia's median age was 30.2 years in 2017.

Indonesia includes numerous ethnic, cultural and linguistic groups, some of which are related to each other. Since independence, Indonesian (a form of Malay and the official national language) is the language of most written communication, education, government, and business. Many local ethnic languages are the first language of most Indonesians and are still important.

Demographics of Jersey

This article is about the demographic features of the population of Jersey, including population density, ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population.

The Bailiwick of Jersey is a British Crown dependency off the coast of Normandy, France.

Demographics of Kerala

Kerala is a state in south-western India. Most of Kerala's 33.3 million people (in 2011) are on of Malayali (Malayalam language speaking) ethnicity. Most of the Malayalam and English speaking Keralites derive their ancestry from Dravidians. Additional ancestries derive from several centuries of contact with non-Indian lands, whereby people of Arab, Jewish, and other ethnicities settled in Kerala. Many of these immigrants intermarried with native Malayalam speakers. A tiny number of Muslims thus take lineage from Arab settlers mixed with local population.

Malayalam is Kerala's official language and is spoken by at least 96% of the people of Kerala; the next most common languages are Hindi and Tamil, spoken mainly by migrant workers from North and eastern parts of India and also from the neighbouring state of Tamil Nadu. Tulu and Kannada is spoken in most parts of the northern district of Kasaragod, adjoining Karnataka. In addition, Kerala is home to 321,000 indigenous tribal Adivasis (1.10% of the populace). Some 63% of tribals reside in the eastern districts of Wayanad (where 35.82% are tribals), Palakkad (1.02%), and Idukki (15.66%). These groups, including the Irulars, Kurumbars, and Mudugars, speak their own native languages. Cholanaikkan tribe in the Silent Valley National Park were contacted only in the 1970s and they are the most isolated tribe in the state.

Demographics of Tajikistan

The Demographics of Tajikistan is about the demographic features of the population of Tajikistan, including population growth, population density, ethnicity, education level, health, economic status, religious affiliations, and other aspects of the population.

Demographics of Uganda

This article is about the demographic features of the population of Uganda, including population density, ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population.

Demographics of the Gambia

The demographic characteristics of the population of The Gambia are known through national censuses, conducted in ten-year intervals and analyzed by The Gambian Bureau of Statistics (GBOS) since 1963. The latest census was conducted in 2013. The population of The Gambia at the 2013 census was 1.8 million. The population density is 176.1 per square kilometer, and the overall life expectancy in The Gambia is 64.1 years. Since the first census of 1963, the population of The Gambia has increased every ten years by an average of 43.2 percent. Since 1950s, the birth rate has constantly exceeded the death rate; the natural growth rate is positive. The Gambia is in the second stage of demographic transition. In terms of age structure, The Gambia is dominated by 15- to 64-year-old segment (57.6%). The median age of the population is 19.9 years, and the gender ratio of the total population is 0.98 males per female.

Demographics of the Palestinian territories

This article is about the demographic features of the population of the area which is commonly described as Palestinian territories and includes information on ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of that population.

According to a commonly used definition as relating to an application of the 1949 Armistice Agreement green line, the Palestinian territories have contributory parts of the West Bank (including East Jerusalem) and the Gaza Strip.

The Palestinian National Authority, the United Nations Security Council, the United Nations General Assembly, the European Union, the International Court of Justice, and the International Committee of the Red Cross use the terminology "Palestinian territories" or "occupied Palestinian territories". Israel refers to the administrative division encompassing Israeli-controlled Jewish-majority civilian areas of Area C of the West Bank, excluding East Jerusalem, as Judea and Samaria Area (Hebrew: אֵזוֹר יְהוּדָה וְשׁוֹמְרוֹן‬, Ezor Yehuda VeShomron).

Demography of Australia

The demography of Australia covers basic statistics, most populous cities, ethnicity and religion. The population of Australia is estimated to be 25,262,200 as of 19 February 2019. Australia is the 52nd most populous country in the world and the most populous Oceanian country. Its population is concentrated mainly in urban areas and is expected to exceed 28 million by 2030.Australia's population has grown from an estimated population of between 300,000 and 1,000,000 at the time of British settlement in 1788 due to numerous waves of immigration during the period since. Also due to immigration from other continents, the European component's share of the population is declining as a percentage.

Australia has an average population density of 3.3 persons per square kilometre of total land area, which makes it is one of the most sparsely populated countries in the world. This is generally attributed to the semi-arid and desert geography of much of the interior of the country. Another factor is urbanisation, with 89% of its population living in a handful of urban areas, Australia is one of the world's most urbanised countries. The life expectancy of Australia in 1999–2001 was 79.7 years, among the highest in the world.

Australia generally doesn't collect data on race and ethnicity, with the exception of Australian Aboriginals and Torres Strait Islanders.

In vitro fertilisation

In vitro fertilisation (IVF) is a process of fertilisation where an egg is combined with sperm outside the body, in vitro ("in glass"). The process involves monitoring and stimulating a woman's ovulatory process, removing an ovum or ova (egg or eggs) from the woman's ovaries and letting sperm fertilise them in a liquid in a laboratory. After the fertilised egg (zygote) undergoes embryo culture for 2–6 days, it is implanted in the same or another woman's uterus, with the intention of establishing a successful pregnancy.

IVF is a type of assisted reproductive technology used for infertility treatment and gestational surrogacy. A fertilised egg may be implanted into a surrogate's uterus, and the resulting child is genetically unrelated to the surrogate. Some countries banned or otherwise regulate the availability of IVF treatment, giving rise to fertility tourism. Restrictions on the availability of IVF include costs and age, in order for a woman to carry a healthy pregnancy to term. IVF is generally not used until less invasive or expensive options have failed or been determined unlikely to work.

In 1978 Louise Brown was the first child successfully born after her mother received IVF treatment. Brown was born as a result of natural-cycle IVF, where no stimulation was made. The procedure took place at Dr Kershaw's Cottage Hospital (now Dr Kershaw's Hospice) in Royton, Oldham, England. Robert G. Edwards was awarded the Nobel Prize in Physiology or Medicine in 2010. The physiologist co-developed the treatment together with Patrick Steptoe and embryologist Jean Purdy but the latter two were not eligible for consideration as they had died and the Nobel Prize is not awarded posthumously.

With egg donation and IVF, women who are past their reproductive years, have infertile male partners, have idiopathic female-fertility issues, or have reached menopause, can still become pregnant. Adriana Iliescu held the record as the oldest woman to give birth using IVF and donated egg, when she gave birth in 2004 at the age of 66, a record passed in 2006. After the IVF treatment, some couples get pregnant without any fertility treatments. In 2018 it was estimated that eight million children had been born worldwide using IVF and other assisted reproduction techniques.

List of sovereign states and dependent territories by birth rate

This article includes three versions of the list of countries by crude birth rate.

Lunar effect

The term lunar effect refers to real or imaginary correlations between specific stages of the roughly 29.5-day lunar cycle and behavior and physiological changes in living beings on Earth, including humans. In some cases the purported effect may depend on external cues, such as the amount of moonlight. In other cases, such as the approximately monthly cycle of menstruation in humans (but not other mammals), the coincidence in timing reflects no known lunar influence.

A considerable number of studies have examined the effect on humans. By the late 1980s, there were at least 40 published studies on the purported lunar-lunacy connection, and at least 20 published studies on the purported lunar-birthrate connection. This has allowed several extensive literature reviews and meta-analyses to be produced, which have found no correlation between the lunar cycle and human biology or behavior.

Population decline

A population decline (or depopulation) in humans is any great reduction in a human population caused by events such as long-term demographic trends, as in sub-replacement fertility, urban decay, white flight or rural flight, or due to violence, disease, or other catastrophes.. Contrary to contemporary belief, depopulation can be largely beneficial for a region, allocating more resources and less competition for the new population, in addition to exempting the disadvantages of overpopulation, such as increased traffic, pollution, real estate prices, and environmental destruction. Per-capita wealth may increase in depopulation scenarios, in addition to improvement of environmental quality-of-life indicators such as improved air and water quality, reforestation, return of native species, etc. The accompanying benefits of depopulation have been termed Shrink and Prosper, with benefits being similar to the Post Civil War Gilded Age, Post World War 1 Economic Boom and the Post World War 2 Economic Boom.

Prevalence of teenage pregnancy

Industrialized and developing countries have distinctly different rates of teenage pregnancy. In developed regions, such as United States, Canada, Western Europe, Australia, and New Zealand, teen parents tend to be unmarried and adolescent pregnancy is seen as a social issue.

By contrast, teenage parents in developing regions such as Africa, Asia, Eastern Europe, Latin America, and the Pacific Islands (in some civilizations) are often married, and their pregnancy may be welcomed by family and society. However, in these societies, early pregnancy may combine with malnutrition and poor health care to cause medical problems. A report by Save the Children found that, annually, 13 million children are born to women under age 20 worldwide. More than 90% of these births occur to women living in developing countries. Complications of pregnancy and childbirth are the leading cause of mortality among women between the ages of 15 and 19 in such areas, as they are the leading cause of mortality among older women.

The age of the mother is determined by the easily verified date when the pregnancy ends, not by the estimated date of conception. Consequently, the statistics do not include women who first became pregnant before their 20th birthdays, if those pregnancies did not end until on or after their 20th birthdays.


Straldzha (Bulgarian: Стралджа) is a small town in Yambol Province, Southeastern Bulgaria. It is the administrative centre of the homonymous Straldzha Municipality. As of December 2016, the town has a population of 6,326 inhabitants.The municipality of Straldzha is home to 12,014 people at the end of 2016: 6,326 of whom live in the city of Straldzha and 5,688 in the villages. It has a relatively high crude birth rate of 13,8‰ and a very high fertility rate of 3,01 children per woman, nearly two times higher than the national rate of 1,54 children per woman (at the end of 2016). The reason for this high fertility rate is the large concentration of ethnic Roma people in the municipality of Straldzha (nearly one-fifth of the population belong to the Romani community, which is exceeding four times the national average).

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