40M abortions. 40M doctors. A total of 80,000,000 people, all serving prison sentences over making and/or performing a personal medical decision. Justice?

...that population is static, when it's growing.
...that all 150 million are of childbearing age.

I think a better estimate can be made.

300 million Americans, 150 million women.

1% would be 1.5 million.  0.50% would be 750 thousand a year.

Exclude women of non-childbearing age and it's back to around about 1% of women of childbearing age in America have abortions each year.  Safe, Legal and Rare... I think we've got the Rare covered, and still legal as of tonight.  

Safe?

(or 1%, if you believe an estimate below).

That's every year.  How many abortions does the average woman who gets an abortion have?  I don't know -- but let's say 2 for the sake of argument (it's probably less than that, but that only makes my point stronger).  If so, then that means 15% of all women have abortions over a 10-year period (if you assume 3% annual; 5% if you assume 1% annual).  As the stats above indicated, almost 1/4 of pregnancies are aborted -- if that's "rare," then we have vastly different standards.

(I'm strongly pro-choice, btw -- I'm only talking about the math here)