Lies, damned lies, and statistics.
The Guttmacher Institute should know that abortion wasn't illegal before Roe v Wade, just that there were 51 laws which controlled the dirty act.
Also, look at the last graph and see how they distorted the data to look like abortion is widely favored in America. They conclude that roughly 80% of Americans still favor abortion in some circumstances. The same data, viewed another way, concludes that 76% of Americans believe that abortion should be restricted (probably to rape and incest). Who are they trying to fool?
Yep...they are the think tank for Planned Murderhood. And The Times wonders why they are blleding readers...