How many Princes are in the Camarilla?

I was recently thinking of a sort of social event that takes place on Halloween, where all but a couple of Princes and Methusalehs convene to discuss stuff about the Camarilla.

The thing is, I don't know how many Princes there are. I was assuming about a hundred or so, but according to my numbers it could range between 100 to 1000.

I want to know how many I should expect so I can determine the feel of the area (it could range from "vampire UN" to "massive convention").

So, how many Princes are out there? I always saw them as sort of the Chairmans of their local Vampire HOA, considering how cities have like 15-50 vampires in them.

Nothing I've seen can give me a straight answer.