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This is a list of U.S. states, federal district, and territories by total fertility rate. Total Fertility Rate by U.S. state in 2021 according to the Center for Disease Control & Prevention Fertility rate by State 2008 - 2020
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]
Under federal law, the Immigration and Nationality Act of 1965, [41] the number of first-generation immigrants living in the United States has increased, [42] from 9.6 million in 1970 to about 38 million in 2007. [43] Around a million people legally immigrated to the United States per year in the 1990s, up from 250,000 per year in the 1950s. [44]
In 2023, the US fertility rate fell another 3% from the year before, to a historic low of about 55 births for every 1,000 females ages 15 to 44, according to final data published Tuesday by the ...
The fertility rate in the United States has been trending down for decades, and a new report shows that another drop in births in 2023 brought the rate down to the lowest it’s been in more than ...
The total fertility rate for selected countries, 2010 [needs update] An alternative measure of fertility is the net reproduction rate (NRR), which calculates the number of daughters a female would have in her lifetime if she were subject to prevailing age-specific fertility and mortality rates in a given year. When the NRR is exactly 1, each ...
The average age of a girl's first period is 12 to 13 (12.5 years in the United States, [6] 12.72 in Canada, [7] 12.9 in the UK [8]) but, in postmenarchal girls, about 80% of the cycles are anovulatory in the first year after menarche, which declines to 50% in the third year, and to 10% by the sixth. [9]
Changing Global Birth Rates and the Advantages of Fewer Children admits that, below certain levels of fertility, problems will arise. It is simply a fact that for a society to function, a ...