Year	% (national estimate)
1983	41.762
1984	41.015
1985	39.661
1986	37.986
1987	36.374
1988	36.737
1989	37.325
1990	37.334
1991	36.031
1992	35.521
1993	33.039
1994	33.202
1995	32.046
1996	31.346
1997	30.038
1998	34.259
1999	32.321
2000	32.417
2001	30.322
2002	30.978
2003	30.215
2004	31.687
2005	29.581
2006	29.268
2007	28.879
2008	28.13
2009	27.226
2010	24.079
2011	19.29
2012	15.984
2013	14.508
2014	15.673
2015	15.056
2016	14.613
2017	15.796
2018	15.895
2019	15.802
2020	15.923
2021	15.602
2022	19.002
2023	20.233