Year % of adults 2004 0 2005 0 2006 5.5 2007 13.7 2008 25.6 2009 29.5 2010 29.9 2011 37.6 2012 39.3 2013 45.6 2014 51.7 2015 81.4 2016 52 2017 54.4 2018 59.3 2019 65.4