The birth rate per 1000 women both in 2006 and 2007, according to the latest CDC figures, was 14.3, but in 2012 it had fallen to 12. 6 from 12.7 in 2011.
The falloff means that annually you get something like 364,000 fewer new Americans to take our place.
In the late 1950s peak birth rates were in excess of 25.0 per 1000 women.
So if we were doing our job reproducing ourselves today like we were in the 1950s, we'd have something like 7.9 million newborn Americans in 2012 instead of 3.95 million.
Birth rates fell into the 15-range in the 1970s and have stayed there pretty much ever since, until now.
Now you know why GDP is also half what it used to be.
We are literally committing suicide.