U.S. Birth Rate Hit Historic Low in 2011, CDC Says
Americans had fewer babies in 2011 than in any year before, according to an annual summary of vital statistics.
In 2011, 3,953,593 babies were born in the U.S. -- 1 percent fewer than in 2010 and 4 percent fewer than in 2009, according to Brady Hamilton, PhD, of the CDC in Atlanta, and colleagues at the agency and the Johns Hopkins Bloomberg School of Public Health in Baltimore.
That number, combined with population data, yielded a crude birth rate of 12.7 per 1,000 people, the lowest rate ever reported for the nation, they reported online and in the March 2013 issue of Pediatrics....
Chris, while a good question, I don't see any statistics on that. Or at least as far as the CDC is concerned, if someone can come up those statistics that would be interesting. I did find this which shows the worldwide recession has created a worldwide use of abortion, Will the global recession lead to a ‚Äėbaby bust‚Äô? but The Underpopulation Bomb problem does seem to be out there.