Looking at people willing to get abortions shows ordinary rates relative to other developed countries, demonstrating that demand for abortions is inelastic among those willing to consider the option. The problem is that the US also has disproportionately high rates of teen pregnancy:

"Despite considerable declines in recent decades, the U.S. adolescent pregnancy rate, at 57 per 1,000 in 2010, is the highest in the developed world outside the former Soviet Bloc. The next highest rate is in New Zealand (51 in 2010)."

https://www.guttmacher.org/fact-sheet/adolescent-pregnancy-a...