"Chinese women have a fertility rate of 1.54. Here in America, white, college-educated women—a good proxy for the middle class—have a fertility rate of 1.6. America has its very own one-child policy. And we have chosen it for ourselves." Replacement rate is 2.1.
http://online.wsj.com/article/SB10001424127887323375204578270053387770718.html
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