I don't get into the abortion debate but the facts are undeniable that they have decreased greatly over the last 25 years.

One can debate is it because of better contraception and less unplanned pregnancies, less premarital sex [[doubt that), increased adoptions, decreased access to abortion, etc. etc.

It may well be as Pam suggests that better contraception has led to less unplanned pregnancies among those who would be most likely to have abortions [[in the case of unplanned pregnancies).