Take the United States as an example: from 1946 to 1964--a short span of just 18 years--a total of 78 million people were born, constituting a third of the American population and the largest bulge in the population profile.
例如美國，從一九四六到六四年，短短十八年間總共出生了七千八百萬人，佔美國總人口的三分之一，是人口結構中最龐大的一群。