Year	% (national estimate)
1983	59.499
1984	58.194
1985	55.318
1986	56.396
1987	55.997
1988	51.053
1989	52.892
1990	44.751
1991	54.68
1992	50.043
1993	47.788
1994	43.822
1995	39.564
1996	38.478
1997	37.21
1998	35.062
1999	33.744
2000	35.261
2001	34.213
2002	36.135
2003	28.003
2004	25.992
2005	28.358
2006	25.418
2007	26.494
2008	27.011
2009	29.726
2010	24.134
2011	22.415
2012	24.414
2013	25.331
2014	22.371
2015	28.871
2016	23.133
2017	27.11
2018	28.41
2019	31.065
2020	25.334
2021	29.335
2022	26.623
2023	32.025