Fertility rate of women from Mexico in 1960 was 7.3 and in 2009 it was 2.4, America is 1.9

The world itself has slowed down. The world fertility rate was 5 in 1950 and now is 2.3

Replacement rate is the number of babies needed to replace the aging ad dying population

Contraception has slowed down the fertility rate in Africa as well from 7.3 to 5.2 in certain. However Africa as a continent is expected to double in the next 30yrs
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