Well, the Republicans have held the White House for 20 of the previous 28 years, so I give them 5/7 of the blame....though really the President who started us on this course, Reagan, deserves much more of it than the following 3 who failed to change that course.
Democrats in Congress do deserve some blame as well for being enablers.
So does Reagan get most of the credit for the hyperprosperity we realized in the mid-90s to mid-2000s?
What led to the prosperity of the mid to late 90's was a reversal of some of Reagan's policies, specifically the Omnibus Reconciliation Act of 1993 played a major role.
Exactly.
Though overall Clinton didn't do much to reverse course, at least he tried.