The US government is keeping track of irresponsible American round-heels. Quoth the AP, "Nearly 1.5 million babies, a record, were born to unmarried women in the United States last year."
Note that the AP does not say "bachelor dudes begat a record 1.5 million bastard offspring last year." In fact, the story doesn’t mention men at all.
It might seem surprising, given the mechanics of human reproduction, that the male component of all this baby-birthin’ is completely ignored. But remember: "single mothers" are a species unto themselves. They don’t reproduce according to the wishes of the Baby Jesus, with human men. Unlike married girls, single mothers were born with character flaws that make them (a) poor and (b) irresistible to invisible incubuses, who ravish’em, knock’em up, and say they’ll call when they won’t.