Parishes that are more conservative and more traditional tend to be the ones growing. People are tired of the “Prosperity Gospel” of televangelists, charlatans and people like Joel Osteen. The “Jesus is my buddy and pal and he’ll be with me no matter what ditch I wallow in” ain’t working anymore.
The attraction and growth of the more conservative and traditional parishes (and orders, and diocese) was my impression also, but I don’t have any hard data. All I know is what I see around me.