Did stricter abortion laws get us this decline? Of course not:
One of the largest factors in the decline has been the drop in teenage pregnancies and abortions, [Rachel] Jones [senior researcher, Guttmacher Institute] said. "We've done a lot of work addressing teen pregnancy, including comprehensive sex education, access to contraceptive services and providing kids with information to help them delay sexual activity," she said [Steven Reinberg, "U.S. Abortion Rate at 30-Year Low," HealthDay via Yahoo News, 2008.09.23].
Abortion bans don't stop abortion, any more than making it legal and safe increases it. Give women access to birth control and health care, create a healthy economy where women can get good jobs, and build a just society that protects women's rights, and abortion becomes a non-issue (as it should be, politically speaking).