Y'know, guys, there is a chap who did a far more relevant census for the game than SE did. His data was collected up until something like August 8th.
Just select whatever world from the world select menu near the top right of the UI. It may take a few seconds to flip. You'll know when you see a double green curved arrow pop up, that its changing.

Now while it may not tell you how many active subscribers there are in TOTAL per world, you can find out how many active level 51-59 players there were on each [in August] because this man has tabulated how many minions and MOUNTS players have collected. ie: Black bo, manacutter, and Midgardsormr mounts. Now we all know that no matter how many classes you level on your char, you only get these mounts ONCE due to msq.
I wish he'd do an update on this info.

http://luckybancho.ldblog.jp/wsurvey...rld=Sargatanas