Year	% of adults
2004	3.2
2005	4.9
2006	6.7
2007	10.3
2008	12.7
2009	15.9
2010	18.3
2011	23.8
2012	23.5
2013	27
2014	63.6
2015	74.9
2016	76.6
2017	80.2
2018	77.7
2019	80.2