I was wondering, how big is the military strenght of the Stormlands?

Like how much men could they rise? And I don't mean when they are divided, like in the War of the Five Kings.

I mean if all the houses in the Stormlands united and went to war following one Lord/King, how much men could they theoretically rise? I read on the offical book wiki of Game of Thrones that they could rise perhaps thirty thousand men. So does anyone know?Fahro1337 (talk) 19:59, March 24, 2017 (UTC)