...I just don't think it should be used as birth control"

Where are these hordes women who use abortion as primary birth control? I have never heard of this happening in real life, but I hear this argument or some variation, all the time. Who says, "Why swing by the CVS for condoms when you can just pop (past the angry protesters) into your local (if it hasn't been closed down yet) Planned Parenthood for a quickie ($300-900) abortion?"

Does anyone have real numbers that I can use to refute this next time I see it?

ETA: I've also heard, "I'm not against abortion, it's just that too many people use it as birth control" (this is usually in defense of some kind of restriction on abortion access). Who, who are these too many people? I know a few people who have had abortions, I've never met one who just nips out to get one because they didn't feel like using a condom.