Chrome 60.1%
Firefox 23.4%
IE 9.8%
Safari 3.7%
Opera 1.6%

chrome-2014 60%
chrome-2013 55%
chrome-2012 46%
chrome-2011 34%

November 60.1%
October 40.4%
September 59.6%

Firefox-2014 60%
Firefox-2013 40%
Firefox-2012 15%
Firefox-2011 3%