Year Internet Users All Adults
2005 10 7
2006 16 11
2008 34 25
2009 50 38
2010 60 46
2011 65 50
2012 67 55
2013 73 62
2014 74 62
2015 76 65

Source: Pew Research Center surveys, 2005-2006, 2008-2015. No data are available for 2007.