Year	% (national estimate)
1997	73.08
2004	75.91
2006	79.69
2007	84.71
2008	87.11
2009	87.44
2010	86.59
2011	86.25
2012	86.13
2013	86.94
2014	87.12
2015	92.44
2016	92.97
2017	88.07
2018	87.24
2019	87.88
2020	86.31
2021	87.28