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Replacement fertility is the total fertility rate at which women give birth to enough babies to sustain population levels, assuming that mortality rates remain constant and net migration is zero. [8] If replacement level fertility is sustained over a sufficiently long period, each generation will exactly replace itself. [8]
According to the 2022 revision of the World Population Prospects [3] [4] the total population was 17,179,740 in 2021, compared to only 2 429 000 in 1950. The proportion of children below the age of 15 in 2010 was 45.4%, 51.7% was between 15 and 65 years of age, while 2.9% was 65 years or the country is projected to have a population of 34 millions peoples in 2050 and 61 millions peoples in 2100 .
The net reproduction rate (R 0) is the number of surviving daughters per woman and an important indicator of the population's reproductive rate. ... Chad: 2.413 Mali ...
Countries need a fertility rate of about 2.1 kids per family to maintain a stable population. But two-thirds of the world's population already lives in countries where fertility is below this so ...
Chad: 819,054 Somalia: 788,763 ... Total fertility rate; List of countries by total fertility rate; List of countries by birth rate; ... Fertility and intelligence ...
The mean age at childbearing indicates the age of a woman at their childbearing events, if women were subject throughout their lives to the age-specific fertility rates observed in that given year. [1] In countries with very high fertility rates women can have their first child at a much younger age than the mean age at childbearing.
Because girls are often married once they reach reproductive age in Chad, adolescent pregnancy is much more common than in other places. In Chad, the rate of childbirth for girls under the age of 15 is 47.8 out of 1,000, and nearly 14% of women in Chad have a child by this age. [23]
This is a list of countries showing past fertility rate, ranging from 1950 to 2015 in five-year periods, as estimated by the 2017 revision of the World Population Prospects database by the United Nations Population Division. The fertility rate equals the expected number of children born per woman in her child-bearing years.