Year % of adults 2004 61.5 2005 64.5 2006 64.5 2007 64.7 2008 69.9 2009 71.9 2010 72 2011 86.3 2012 89.4 2013 93.6 2014 96.1 2015 96 2016 100 2017 100 2018 100 2019 100