Year	% of adults
2004	0.6
2005	1.1
2006	1.9
2007	2.6
2008	3.5
2009	46.5
2010	57.2
2011	59.7
2012	63.8
2013	73.6
2014	76.8
2015	80.8
2016	84.9
2017	88.8
2018	93.3
2019	96.9