I have seen numbers on this, but don't have the info at hand at the moment.
Suffice it to say that the number of women who resorted to "coat hanger" abortions was hugely exaggerated by Planned Parenthood, NARAL etc.
Sadly, the Left gets away with made-up numbers all the time. I remember when "homeless" advocates fabricated laughably absurd numbers during the Reagan years; and rain forest zealots so inflated the number of acres of jungle cut down every year, that if their claim had been true, the entire world would have been deforested in only a few months.
And back to the issue of "safe and legal abortion" ... pro-aborts appear to have forgotten that abortion was legal, pre-Roe v Wade, if the mother's life was in danger. It's true that in most states, a medical board would have to hear the case first; but that was a prudent measure, given the gravity of the decision to use a medical doctor to end a child's life -- a concept that was commonly understood at the time.
Agreed, the abortion movement never had anything to do with the mothers life being in jeopardy it was always about having unrestricted infanticide all along. It is an evil that gets vigorous approval from the evil and tacit approval from the brainwashed masses.