They must have polled a bunch of women.
As it is, almost 30% of American women have had abortions.
I assume you mean clinical abortions. Most birth control pills are abortifacients - ie they allow conception (the human life begins at this very moment) however prevent implantation. ERGO - there are countless babies that are aborted/killed via the Pill. Ironically, there are millions of women who take abortifacients that state they are pro-life...mmmmm?