Year	% (national estimate)
1983	37.702
1985	37.699
1987	51.792
1988	49.688
1989	50.631
1990	53.814
1991	54.372
1992	56.014
1993	54.316
1994	53.216
1995	55.036
1996	54.378
1997	58.391
1998	61.692
1999	62.904
2000	69.937
2001	71.514
2002	71.805
2003	69.098
2004	66.529
2005	59.536
2006	61.291
2007	63.944
2008	64.786
2009	62.469
2010	59.777
2011	59.963
2012	59.74
2013	59.174
2014	58.72
2015	59.894
2016	59.575
2017	61.033
2018	62.76
2019	64.648
2020	61.435
2021	69.385
2022	75.706
2023	76.768