thats normal for auto clubs.
my wife and i helped build a local euro club back up that was about to have to close tis corpus chapter. we put in lots of time and work meeting people and passing out cards, etc. now, 5 years later, we don't have any more bmws and none of hte original 5 or 6 are even part of the club at all. i think that the club doesn't even have a chapter down here anymore.