Year	% of adults
2004	2.5625
2005	2.476470588235294
2006	3.8588235294117643
2007	3.810526315789473
2008	5.163157894736844
2009	5.542105263157895
2010	5.589473684210526
2011	7.844999999999999
2012	8.31904761904762
2013	8.442857142857143
2014	8.847619047619046
2015	10.295238095238098
2016	12.852380952380955
2017	13.295238095238094
2018	14.004761904761907
2019	15.01904761904762