Year	% (national estimate)
1983	47.057
1984	54.339
1985	55.908
1986	56.82
1987	56.878
1988	57.989
1989	57.696
1990	58.814
1991	58.561
1992	56.414
1993	53.994
1994	52.858
1995	50.303
1996	47.108
1997	46.104
1998	46.423
1999	47.577
2000	47.098
2001	47.289
2002	47.242
2003	46.722
2004	44.373
2005	46.84
2006	48.036
2007	49.428
2008	49.647
2009	49.788
2010	48.455
2011	49.652
2012	48.013
2013	48.77
2014	47.879
2015	46.975
2016	47.322
2017	48.468
2018	47.845
2019	48.393
2020	48.438
2021	50.023
2022	50.888
2023	51.433