Population Council, New York, USA.
Int Perspect Sex Reprod Health. 2011 Dec;37(4):209-16. doi: 10.1363/3720911.
During the past half century, fertility declines have been pervasive in Asia and Latin America. Between the early 1950s and the early 2000s, the total fertility rate (TFR)-the average number of live births a woman would have during her lifetime, assuming constant fertility rates-dropped from 5.7 to 2.4 births per woman in Asia and from 5.9 to 2.3 births per woman in Latin America.1 Only a handful of countries in these regions still have fertility rates higher than four births per woman. In Sub-Saharan Africa, however, fertility remains high in the large majority of countries. Although some declines have occurred, the average total fertility rate in 2005-2010 exceeded 5.1 births per woman-more than double the levels observed in Asia and Latin America.
在过去的半个世纪中，生育率下降在亚洲和拉丁美洲普遍存在。从 20 世纪 50 年代初到 21 世纪初，总生育率（TFR）——一名妇女在其一生中预计会生育的活产婴儿数量，假设生育率保持不变——从亚洲的每名妇女生育 5.7 个孩子降至 2.4 个，拉丁美洲则从 5.9 个降至 2.3 个。1 这些地区只有少数几个国家的生育率仍高于每名妇女生育 4 个孩子。然而，在撒哈拉以南非洲，生育率在大多数国家仍然很高。尽管一些国家的生育率有所下降，但 2005-2010 年的平均总生育率仍超过每名妇女生育 5.1 个孩子——是亚洲和拉丁美洲观察到的水平的两倍多。
