To the OP = why are you asking about members? What relevence is that?
If you are one of the morons who reckon Membership is Utopia when it is merely season ticket holders with a mail out sticker and coffee cup, you may be better off asking about leagues club membership (the basis of financial strength), average home crowd (active fan base) or TV ratings (passive fan base).
If you are simply an AFL troll, as I suspect, then ask about average IQ, where the 9k to see Cronulla or Canberra on a wet saturday night, or the 35k at Lang Park (whose total iq would equal 9 k at Canberra or Cronulla) would sh*t on yours.