(2011). But still relevant. Here's a more recent comparison of version adoption rates from ArsTechnica: http://arstechnica.com/information-technology/2013/09/window...
Or as an album of just the charts: http://imgur.com/a/3UM4J
Or as an album of just the charts: http://imgur.com/a/3UM4J
The slow rate of ie adoption is from corporate users who are reluctant to update more frequently because of the risk of breaking their internal applications. If this was any other browser I am guessing the chart would have looked the same.