Web browsers statistics chart

On this page you can find web browsers statistics month by month. Browsers statistics chart contain internet common usable browsers: Internet Explorer, FireFox, Chrome, Opera, Safari. There are no browsers version break down on this page.
It is easy to see that Internet Explorer most usable, the second is FireFox, and the third is Chrome.
IE vs FF. Maximum monthly usage of IE is higher then FF up to 30%, minimum monthly usage of IE is lower then FF usage to 15%, avarage monthly usage of InternetExplorer is higher then avarage FireFox usage to 10%.
IE vs Chrome. Maximum monthly usage of IE is higher then Chrome up to 45%, minimum monthly usage of IE is lower then Chrome is 4%, avarage monthly usage of InternetExplorer is higher up to 30%.
FF vs Chrome. Datagrams of FF and Chrome having something similaer, for example Jul Aug Sep of 2009 looking the same except some stable percents differece. FireFox avarage usage if higher then Chrome usage up to 20%. And Chrome was most usable then FireFox only once, with difference 6%.
Browsers statistics of Safari and Opera going stable and look like never will be in list of common usable browsers.