Judging by the numbers involved, I think you may have to wait a while! There was a discussion on CWT several years ago about the numbers and I was so surprised (the overall figure is considerably higher than what I'd been seeing locally) that I checked into it--and it looks like they were right. Of course I can't find it now but the upshoot was that out of the huge number of men drafted, only about a fifth actually served themselves.
@John Hartwell had some interesting facts on the situation in Massachusetts. Probably the numbers in Maine were smaller because this is an area of small towns: the social price of having hired a substitute was steep (especially if that substitute died).