In June 2012, Chrome continued to extend its lead over IE in browser market share.
In June 2011, Google Chrome was the big winner, gaining market share at the expense of IE, Firefox, Safari, and Opera.
In June 2010, IE showed an increase in market share for the first time since June 2009.
Browser market share in June 2009. This month IE saw an increase in market share after 4 straight months of losing market share.
Browser market share for June 2008.
Browser market share for June, 2007, based on traffic to my top website.