Year	% of adults
2004	7.925
2005	8.604166666666666
2006	9.352
2007	10.144
2008	10.703846153846154
2009	13.003846153846151
2010	14.16153846153846
2011	16.203703703703702
2012	17.725925925925925
2013	18.744444444444444
2014	18.962962962962965
2015	19.651851851851852
2016	22.140740740740743
2017	27.61851851851852
2018	31.085185185185182
2019	31.57037037037037