Year	% (national estimate)
1983	48.243
1984	54.223
1985	55.296
1986	57.613
1987	57.443
1988	59.177
1989	58.112
1990	59.732
1991	59.084
1992	56.872
1993	53.921
1994	51.512
1995	49.815
1996	47.983
1997	46.797
1998	47.716
1999	48.61
2000	48.566
2001	48.615
2002	46.896
2003	45.039
2004	42.711
2005	43.674
2006	45.691
2007	46.519
2008	48.599
2009	47.194
2010	48.109
2011	48.501
2012	48.393
2013	48.596
2014	47.909
2015	46.627
2016	46.899
2017	47.498
2018	48.789
2019	50.468
2020	49.054
2021	51.482
2022	51.805
2023	52.774