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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. [10] If replacement level fertility is sustained over a sufficiently long period, each generation will exactly replace itself. [10]
While the overall population is expected to increase, the growth rate is estimated to decrease from 1.2 per cent per year in 2010 to 0.4 per cent per year in 2050. [30] The birth rate is also projected to decrease from 20.7 to 13.7, while the death rate is projected to increase from 8.5 in 2010 to 9.8 in 2050. [30]
The following list sorts countries and dependent territories by their net reproduction rate. The net reproduction rate (R 0) is the number of surviving daughters per woman and an important indicator of the population's reproductive rate.
Crude birth rate refers to the number of births over a given period divided by the person-years lived by the population over that period. It is expressed as number of births per 1,000 population. The article lists 233 countries and territories in crude birth rate. The first list is provided by Population Reference Bureau. [1]
Country Number of births (2023) India 23,219,489 China 8,899,881 Nigeria 7,509,758 Pakistan 6,882,058 Indonesia 4,482,359 Democratic Republic of the Congo 4,369,683
The birth rates [1] and death rates [2] in columns one and two are the CIA World Factbook estimates for the year 2022 unless otherwise noted, rounded to the nearest tenth (except for Mayotte and the Falkland Islands with 2010 and 2012 estimates respectively). The natural increase rate in column three is calculated from the rounded values of ...
Median birth intervals (median number of months since preceding birth) Total: 36.2 Rural: 35.9 Urban: 40.3 (2011) Median age at first birth. Median age: 20.1 (2011) Fertility rate – past trend and present. Total fertility rate: 4.6 children born/woman (1996) Total fertility rate: 4.1 children born/woman (2001)
The number shown is the average annual growth rate for the period. Population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship—except for refugees not permanently settled in the country of asylum, who are generally considered part of the population of the country of origin.