Need information- US historical draft numbers

I've got a little theory floating around in my head, but I need some help from you guys. I've done some google searching, but haven't gotten anything useful.

What I'm looking for is information on what proportion of US soldiers were draftees, as opposed to volunteers, during every war in which a draft has been enforced. This is for all branches of the military (if it is divided up by branch, it would be all the more useful).

I'm going to keep looking, and thank you in advance for any help.

Awww. you guys are no fun :-p