CSPAN2 Book TV February 2, 2013
And then immediately after the First World War or the second world war, sorry, we had the only major incidence of increased fertility rate, and thats the baby boom. Everybody knows about the baby boom. And it really was a remarkable moment, because not only did the fertility rate increase quite high, as high as 3. 7, i think, for white americans and, i think, 3. 9 for black americans, not only did it jump up, but it stayed up for an entire generation. It was a really long lasting effect. People changed the way they lived for a generation, and then by 1970 that momentum had ended, and we saw no...
Source: archive.org