Year % of adults 2000 34.2533770972083 2005 29.0970246063736 2010 24.869505552573 2011 24.1351198053974 2012 23.3333463906368 2013 22.7141448027826 2014 22.0480757511818 2015 21.3786470123396 2016 20.7834203234187