Year	% (national estimate)
1983	37.086
1984	34.721
1985	35.56
1986	37.054
1987	36.528
1988	33.543
1989	33.856
1990	33.285
1991	33.441
1992	32.562
1993	29.833
1994	29.663
1995	28.918
1996	29.409
1997	28.549
1998	29.219
1999	27.474
2000	33.738
2001	31.836
2002	31.335
2003	30.417
2004	30.194
2005	29.73
2006	30.355
2007	29.939
2008	29.728
2009	27.398
2010	27.294
2011	27.738
2012	27.819
2013	25.345
2014	24.517
2015	24.993
2016	24.017
2017	24.439
2018	26.366
2019	27.279
2020	25.571
2021	25.785
2022	26.542
2023	27.064