There are far fewer Planned Parenthood and other abortion providers than there were 25 years ago. You mean like that?
There's far fewer adult theaters than there were 25 years ago. Do you think Americans are watching less porn?
Anybody who wants an abortion can get one. At any rate, greater access to contraception you only have to take 2-4 times a year as well as "morning after" type pills are increasingly reducing the necessity of surgical abortion.
Sure, there have been some legislative strides at the state level against abortion clinics but I'm certainly not ready to credit this to some sort of conservative revival. Not when looking at the dismal state of other social conservative issues. In fact, the only victory that social conservatives have enjoyed over the years has been a strengthening of RKBA issues, in part because they were able to unite with libertarians.