Year	% (national estimate)
1980	71.694
1981	71.471
1982	70.878
1983	69.798
1984	68.693
1985	68.725
1986	68.579
1987	69.71
1988	70.654
1989	71.197
1990	71.855
1991	73.011
1992	73.571
1993	73.199
1994	74.172
1995	74.644
1996	74.404
1997	73.919
1998	69.184
1999	69.08
2000	71.084
2001	71.375
2002	72.622
2003	72.316
2004	72.571
2005	72.135
2006	71.878
2007	71.926
2008	71.329
2009	70.437
2010	70.49
2011	70.934
2012	71.245
2013	71.306
2014	71.943
2015	71.639
2016	71.365
2017	71.371
2018	70.925
2019	70.766
2020	69.924
2021	70.152
2022	71.659
2023	71.454