Year % of adults 2000 7.00085618178253 2005 4.9690722410979 2010 3.623333668574 2011 3.38820547475183 2012 3.19722862482912 2013 3.00272260869674 2014 2.84806349623669 2015 2.6746137403541 2016 2.53589187814808