I know but there are different ways to try and count.
Clan rosters is one way, however if you have a Gen who hasn't updated it in a while it not accurate.
Going to each clans user group is a great way to count who has joined the clan, however like my clan were missing about half our members. So that way isn't the best either.
Iv come up with you have to cross examine both of those ways and its all ends being just an estimation in the end.