Year	% of adults
2004	3.3354166666666676
2005	3.284662576687117
2006	3.8964071856287434
2007	4.241764705882354
2008	5.219883040935671
2009	6.440116279069768
2010	7.14011627906977
2011	8.20747126436782
2012	9.007303370786516
2013	10.2026455026455
2014	10.471428571428568
2015	11.777894736842104
2016	12.583157894736841
2017	13.989473684210529
2018	15.33298429319372
2019	15.796858638743464