Scroll down the page, and there is a historical distribution going back 5 months. Of course, the farther back you go, the higher 1.5 and 1.6 get, but you have

Scroll down the page, and there is a historical distribution going back 5 months. Of course, the farther back you go, the higher 1.5 and 1.6 get, but you have to factor in that 2.1 and 2.2 weren't released until 3/15 and 5/15, respectively. The most recent 2 weeks should be a more accurate picture of who is using what version right now. As we move forward, 2.1 and 2.2 are only going to go up as new phones are released and existing phones upgraded.