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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]
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. [65] Despite the decrease, U.S. teen birth rates remain higher than those in other developed nations. [ 65 ]
Along with mortality rate, natality rate is used to calculate the dynamics of a population. They are the key factors in determining whether a population is increasing, decreasing or staying the same in size. Natality is the greatest influence on a population's increase. Natality is shown as a crude birth rate or specific birth rate.
Birth rate should not be confused with the generally more useful total fertility rate, which adjusts figures to account for how many females of reproductive age there are. Data from Population Reference Bureau's 2020 World Population Data Sheet .
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]
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.
Year Average population (from 1990 onwards beginning of year) Live births Deaths Natural change Crude birth rate (per 1000) Crude death rate (per 1000) Natural change (per 1000) Crude migration change (per 1000) Crude population change (per 1000) Total fertility rate Abortions reported 1950 7,745,000 197,200: 62,000: 135,200 25.5: 8.0: 17.5-14. ...
Date/Time Thumbnail Dimensions User Comment; current: 03:08, 20 October 2019: 672 × 455 (50 KB): Twopower332.1938 {{Information |description ={{en|1={{en|1=line graph of crude birth rate, death rate and natural change (difference of first two) for United States since 1935}}}} |date =2019-10-19 |source =English wikipedia |author =Twopower332.1938 |permission ={{self|cc-by-sa-4.0}} }} Category ...