As I was plotting out the vampires for my campaign city I realised that most of them would probably have a Ghoul or two (or three or even more) but that I had no idea what the typical retinue would be like. Is there any indication in the rules as to an 'average' number of Ghouls there are per Vampire in a city? Does it vary much by clan as well?
I've heard that in Camarilla cities there is generally an imposed limit of one Vampire per hundred thousand mortals but is there a similar limit on the number of Ghouls, and if so, does it differ for Anarch and Sabbat cities?
Thus in a city of a million humans there would be, on average, ten Vampires and ??? Ghouls.
I'm happy for an answer from any of the editions of Vampire the Masquerade, from other sourcebooks, or even a simple mention in some (official) fiction. No guesswork please, but a suitably mathematical extrapolation might be okay provided the numbers are reasonably justifiable.