Year	% of adults
2004	0.8
2005	1.1
2006	2.7
2007	9.2
2008	13.4
2009	19
2010	26.4
2011	29.8
2012	37.8
2013	39.1
2014	41.8
2015	41.5
2016	41.8
2017	51
2018	54.8
2019	59.4