Year % of adults 2004 0.13999999999999996 2005 0.5333333333333333 2006 0.575 2007 0.505 2008 0.6 2009 0.6225 2010 0.5725 2011 0.795 2012 0.9214285714285715 2013 1.1488372093023258 2014 1.4302325581395352 2015 1.6113636363636359 2016 1.8113636363636365 2017 2.0636363636363635 2018 2.5613636363636365 2019 3.1136363636363638