Year	% of adults
2004	7.1
2005	7.7
2006	11.5
2007	11.5
2008	5
2009	5.2
2010	5.4
2011	7.3
2012	7.3
2013	7.5
2014	7.8
2015	7.7
2016	7.4
2017	7.4
2018	7.4
2019	7.3