I think that it if there is free birth control available, then abortion shouldn't be needed as much. Contraceptives are there if you do not want to get pregnant whether you have consented sex or get raped.
Rapist: "I'm going to rape you"
Victim: "Okay, but before you do" *hands condom* "Could you put on this condom I got free from the clinic?"
Rapist: "Oh, of course!" *slides it on* "Safe sex is good sex, even if it's not consensual!"