[stats] track overall member count
[stats] track overall member count

(cherry picked from commit 8ca5821624e81180cbff74657c78a04cf6ef642a)

b1naryth1ef/rowboat,b1naryth1ef/rowboat,ThaTiemsz/jetski,ThaTiemsz/jetski,b1naryth1ef/rowboat,ThaTiemsz/jetski,ThaTiemsz/jetski,aliasfalse/rowboat,b1naryth1ef/rowboat,aliasfalse/rowboat,aliasfalse/rowboat,aliasfalse/rowboat