Year	% (national estimate)
1996	77.7
1997	75.7
1998	75.7
1999	75.1
2000	74.3
2001	75.1
2002	74.8
2003	74.4
2004	74.09
2007	76.798
2009	78.917
2010	80.118
2011	80.374
2012	79.981
2013	80.445
2014	80.539
2015	80.578
2016	79.83
2017	79.41
2018	79.999
2019	79.6
2020	77.523
2021	75.875
2022	77.075