How Many Tenured Teachers Does New York City Have?

Yeah. That's actually a question I'm asking you! The total number is difficult to find.

I know that one pro-reform website claimed there to be 55,000 tenured teachers back in 2006 (that was before the recession, when the total teaching core was at around 80,000) but how many teachers in New York City have tenure now?

Any comment or email with even an estimate would be much apreciated!