Year % of adults 2000 39.3305189226662 2005 35.9595778037129 2010 33.2829545431902 2011 32.755355299225 2012 32.3170673033097 2013 31.9338916854003 2014 31.4694038429531 2015 31.1924419852536 2016 30.8008303878845