Year	% (national estimate)
1992	80.1
1995	64.4
1996	76.81
1997	74.78
1998	74.75
1999	71.41
2000	71.6
2001	72.6
2002	66.62
2003	67.06
2004	64.73
2005	70.8
2006	74.49
2007	75.89
2008	75.28
2009	73.7
2010	74.084
2011	74.567
2012	75.433
2013	75.131
2014	73.749
2015	73.487
2016	73.618
2017	73.865
2018	73.626
2019	74.882
2020	72.08
2021	73.723
2022	75.546