Year	% (national estimate)
1983	50.16240576390378
1984	51.73718464778756
1985	51.547791091557194
1986	51.1579106710037
1987	51.234738517596554
1988	51.562747080374734
1989	52.05668757149367
1990	51.914574524307604
1991	50.19882965334204
1992	48.89095026674649
1993	47.65192650486674
1994	47.60466161902573
1995	47.61535018768892
1996	46.97542945140495
1997	47.0974590295548
1998	47.417175131363535
1999	47.95706071083734
2000	48.52182299922522
2001	47.7393241948181
2002	47.11072650807609
2003	46.091124184320634
2004	45.96585722697521
2005	45.6090588820066
2006	46.13411427640224
2007	45.84986852180036
2008	44.929319843060206
2009	40.936408484413676
2010	39.91675881605879
2011	40.06516105382895
2012	39.85702461519527
2013	40.10609930897455
2014	40.519306422988144
2015	41.496446308497624
2016	42.22768861615763
2017	42.49643352888697
2018	43.08421653013215
2019	43.752440085937415
2020	40.672603397317
2021	42.90232532017315
2022	45.05342706535836
2023	45.58264439992705