Year	% (national estimate)
1983	50.408
1984	57.175
1985	58.326
1986	59.305
1987	59.465
1988	60.582
1989	59.517
1990	60.669
1991	60.456
1992	58.299
1993	56.221
1994	54.907
1995	52.465
1996	50.375
1997	49.666
1998	50.003
1999	50.757
2000	50.406
2001	50.387
2002	50.011
2003	49.46
2004	47.457
2005	49.703
2006	50.811
2007	51.421
2008	52.273
2009	51.923
2010	51.499
2011	51.697
2012	50.546
2013	51.019
2014	50.081
2015	48.931
2016	49.188
2017	50.001
2018	50.276
2019	51.371
2020	50.887
2021	52.769
2022	53.396
2023	54.033