Looking through "The Last Godfather" about Joey Massino, it says:
"He (Massino) and Vitale split the two hundred dollars a month they got in tribute from every made guy. The figure jumped to seven hundred and fifty dollars and then fifteen hundred dollars, by which time Vitale had been cut out of the equation. By the late nineties, the Family's ranks had swelled to include more than a hundred goodfellas and close to a thousand associates."
Presumably that comes from Vitale's testimony.

That's interesting they had a flat rate of tribute instead of a percentage deal. Massino's testimony used to be on youtube but I can't find it anymore. I only got as far as him being made. I wonder if he mentioned how much he made as a boss?