Year % of adults 2004 33.5 2005 38.6 2006 38.6 2007 42.7 2008 48.3 2009 40.3 2010 60.8 2011 53.8 2012 58.3 2013 53 2014 50.8 2015 58.6 2016 65.7 2017 67.8 2018 60.9 2019 64.2