"* = Based on a sample set of 29,215 Google+ Profiles." And http://findpeopleonplus.com http://findpeopleonplus.com has "947,996 Google+ users indexed". Maybe

"* = Based on a sample set of 29,215 Google+ Profiles." And http://findpeopleonplus.com http://findpeopleonplus.com has "947,996 Google+ users indexed". Maybe we should consider the fact that Google+ has more than 10M users now ? Also, you can hide your gender so the stats might be off.