Behind the fertility trend is a vast cultural shift from thegeneration that fought in World War II, which married early and produced thegreat baby boom of 1945 to 1965.

在生育趋势的背后是文化的大变革，在二战中摸爬滚打的一代人早早结婚，创造了1945年到1965的婴儿潮，这种情况已不复存在了。

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When World War II ended in 1945 and the Baby Boom began the following year, the 30-year, fixed-rate mortgage became a cornerstone of society and led to unprecedented levels of homeownership.

1945年第二次世界大战结束，并在随后一年出现婴儿潮，这种30年的、固定利率的抵押贷款成了社会基石，社会群体最大化地出现空前多的私房房主。

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With 2007 as the largest birth year in U.S. history, even larger than the years of the post-World-War-II baby boom.

FORBES: Investing In Oz

The only comparable event is the post-World War II Baby Boom in the US. This is an opportunity, and can be a huge challenge, because all those people will want to be well-fed, educated and productively employed.

WSJ: The Genesis of Jobs

Boom time: A sharp increase in births after World War II created the baby boomer generation, born into an era of unprecedented peace and prosperity.

BBC: Have young people never had it so bad?