I'm not going to go back and count up the numbers, even though by mentioning the Tonys you've limited the time frame to 1946 and beyond. And I imagine your question is mostly rhetorical anyway. So I'll only observe that there was a long period of time between 1946 and now when Broadway wasn't tourist-driven nor heavily dependent on musical revivals. Audiences at that time wanted to see new musicals--because they were the interesting and exciting ones--and so, very few musical revivals were even produced on Broadway: none at all for an open-ended commercial run between 1954 and 1970. Ah, les beaux jours!