I had no idea

Surprising, considering the rhetoric:

Of the 1.6 million abortions performed in the U.S. each year, 91 percent are performed during the first trimester (12 or fewer weeks’ gestation); 9 percent are performed in the second trimester (24 or fewer weeks’ gestation); and only about 100 are performed in the third trimester (more than 24 weeks’ gestation), approximately .01 percent of all abortions performed. (source) [emphasis added]

Update: After discussing this with my wife, it occurred to me that this probably about the number one would expect of medically necessary abortions in a country of 250 million or so.