Year	% of adults
2004	2.5
2005	2.7
2006	2.9
2007	2.5
2008	2.7
2009	2.7
2010	2.7
2011	3.3
2012	3.4
2013	3.3
2014	3.2
2015	3.1
2016	3.1
2017	100
2018	100
2019	100