The US set a record in 2007 for the most births ever -- 4.3 million. The old record was set in 1957, the top year of the post-WW2 baby boom.
The birth rate, of course, is not at Baby Boom levels -- it is barely half, with American women having just over two kids each, compared to four in the 1950s. Increased population, though, means that the absolute number is the highest ever.
Good news for the Huggies and Gerbers brand managers and, in a few years, for Mattel and Hasbro.