Out of nosiness, is it mostly newbies or people who've been before?
I did a count when we were still in the 30's, over half had been at least once before, we have also have stubborn core of people who come every time
... people do tend to come back! But YES also quite a few new people....friends of friends and friends *excited wiggle*
edit - also people who find us either here or other places on the internet...amazing how GB still does it's stuff.