Year % of adults 2000 5.82112202219155 2005 4.22652559528353 2010 3.11982835807237 2011 2.90370132090003 2012 2.75811892582564 2013 2.60047713916933 2014 2.45906783592997 2015 2.27340852095891 2016 2.1619176914244