Found this while searching the forums. It is an interesting way to check if your pillaging too much. I wouldn't trust it completely yet, but I am going to try it out and see if it works.
I've used it a few times, but a lot of the towns I pillage are called "Polis" for some reason and that calculator can't tell the difference between towns with the same name
and that calculator can't tell the difference between towns with the same name 
