Year % of adults 2000 40.8753728481683 2005 36.5497433778292 2010 32.8378028966557 2011 32.1914376653378 2012 31.558620755648 2013 30.9263420857367 2014 30.2826565435582 2015 29.7241090524073 2016 29.1518722769273