We often wonder how many of us there are. While Apple occasionally shares the number of active Mac OS X users, it has been a while since the last update. Eight months ago in August 2006 at Apple's Worldwide Developers Conference, Steve Jobs said there were 19 million active Mac OS X users. Keith Bachman, an analyst at Bank of America Securities, now quotes a higher number in an AppleInsider article: 22 million users of all versions of Mac OS X. Bank of America Securities estimates an increase of 6 million Mac users since the release of Mac OS X 10.4 Tiger in June 2005. It's also highly likely that there are uncounted millions of users still using Mac OS 9 and earlier.