Year	% of adults
2004	4.694444444444443
2005	4.161363636363635
2006	5.404444444444444
2007	6.266666666666667
2008	8.591111111111111
2009	11.286956521739127
2010	12.923913043478262
2011	14.152173913043475
2012	15.600000000000001
2013	17.892156862745097
2014	18.547058823529415
2015	21.531372549019608
2016	21.47254901960784
2017	22.380392156862747
2018	23.25882352941177
2019	22.484313725490196