Year % of adults 2000 6.78251103325989 2005 4.79009842141635 2010 3.46378141808404 2011 3.21194261490591 2012 3.03814307430642 2013 2.84832554246323 2014 2.68328444451206 2015 2.50828638291267 2016 2.39593169308432