Year	% of adults
2004	0
2005	0.2
2006	0.4
2007	1.6
2008	3.7
2009	5.9
2010	11.9
2011	18.7
2012	24.6
2013	32.1
2014	38.2
2015	35.3
2016	30.6
2017	37
2018	37.9
2019	39.2