Year	% of adults
2004	0.2
2005	1.9
2006	2.4
2007	2.1
2008	1.9
2009	1.9
2010	1.8
2011	1.8
2012	1.7
2013	2
2014	2
2015	0.3
2016	0.3
2017	0.4
2018	0.5
2019	0