140,000 approx members
2500 approx clubs

each of those clubs have to have 56 members just to account for the current approx membership.

how many times have you read about some club that caps it's membership at 35?
how many 6 -10 member clubs are there out there in rural america?

i think 2500 clubs is too few just to include the 140,000, without adding in however many non AMAers ya wana count.