Help me choose Tshirt Sizes
 

I need to come up with a breakdown in sizes, so for the sake of a round figure let's say that I'm going to order 100 shirts. These will be for adults male and female, in US Canada and Europe.

Sizes available to choose from are:
Youth Small (YS),
Youth Medium (YM),
Youth Large (YL)
Adult Small (S)
Adult Medium (M)
Adult Large (L)
Adult Extra Large (XL)

XXL and XXXL are additional cost.

well if you are going to hand them out to webmasters, remember most of us are fat as fucking whales ;)

What about something like this? Would you make any changes?
S - 10
M - 20
L - 35
XL - 25
XXL - 10

for US webmasters at least 40 XXL, the rest smaller, for european more M sized, we are younger, I think