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Snoopy said:
CuCabeludo said:
It is already happening for a while. US fertility rates are currently 1.7 and falling. Anything bellow 2.1 means population will stabilize, hit a peak and then only shrink.

The United States population is still growing actually. We need to start dialing it back.

It doesn't happen overnight. There is a gap between the moment a country drops below 2.1 and its populartion starts shrinking. US fertility rate fell below 2.1 between 2010 and 2015. It will take at least 3 decades until population peaks and starts shrinking.

Japan fertility rate dropped below 2.1 between 1975-1980, and as a result population grew and peaked until 2008, and from now on it will only shrink.