Year	% of adults
2004	1.8
2005	2.9
2006	2.9
2007	2.3
2008	2.7
2009	2.5
2010	2.4
2011	1.8
2012	1.8
2013	2.4
2014	1.8
2015	3.3
2016	1.9
2017	1.9
2018	1.6
2019	1.5