It's a shame we don't have a resource like The Sondheim Review to give us up to date stats.
I miss the Sondheim Review. And whatever it invented itself to be for a short time after that.
The "Everything Sondheim" website, which was originally supposed to be a substitute, and is now supposedly being curated by Signature Theatre, isn't really very active. I don't think anyone really has the time to put into it.