Year	% of adults
2004	7.9
2005	9.8
2006	9.1
2007	11.3
2008	11.3
2009	16.4
2010	16.3
2011	21.5
2012	22.9
2013	23.2
2014	23.4
2015	16.1
2016	7.8
2017	7.8
2018	7.9
2019	7.9