According to this article, the number of abortions performed in the United States has reached its lowest level since abortion was legalized. This most recent count is from 2005 during which 1,200,000 babies were aborted. Even still, more than 20% of pregnancies ended in abortion. 30% of abortions takes place at 6 weeks or earlier.
On a related topic, Dr. Ron Paul has delivered over 4,000 babies and has never performed an abortion.