If every woman that got pregnant as a result of rape got an abortion it would still be a small percentage of the total abortions.
The fact of the matter is that the biggest majority of abortions are simply post coitus birth control. Those of who are pro-life do NOT want to control a woman's body. We would just prefer that a woman control her body. If she would do that the number of unborn babies murdered every year would most likely be much less.