Where to find online poker statistics

[mulebennett]

Hi guys, I'm doing an assignment for my journalism class and I was hoping to obtain some online poker statistics. Mainly hoping to see how many players there are at any given time playing online poker as well as how many different sites offer online poker. Does anybody know where I could find these statistics? I tried PokerPulse.com but I couldn't find those two, specifically. Any help is appreciated.