Year	% of adults
2004	1.0375
2005	1.4611111111111112
2006	1.588888888888889
2007	2.9850000000000003
2008	4.34
2009	5.404999999999999
2010	5.425
2011	6.305
2012	7.29047619047619
2013	7.923809523809524
2014	9.514285714285714
2015	8.854545454545455
2016	9.413636363636364
2017	10.522727272727272
2018	11.581818181818182
2019	12.20909090909091