Year	% of adults
2004	6.4402061855670105
2005	6.407142857142858
2006	7.3728070175438605
2007	9.703508771929824
2008	10.276315789473687
2009	11.839130434782607
2010	12.48
2011	13.93304347826087
2012	14.436440677966104
2013	16.134126984126983
2014	16.827777777777776
2015	18.279527559055122
2016	18.314960629921256
2017	19.456692913385826
2018	21.14488188976378
2019	23.46141732283464