The Unwed Baby Boom

I read this on CNN and found the percentage to be staggering:

"Nearly 40 percent of babies born in the United States in 2007 were delivered by unwed mothers, according to data released last month by the National Center for Health Statistics. The 1.7 million out-of-wedlock births, of 4.3 million total births, marked a more than 25 percent jump from five years before. Statistics such as these, which include for the second year in a row a bump in teen pregnancies, after a 14-year decline."