Year	% (national estimate)
1983	65.25417279090401
1984	65.019302717061
1985	65.45680791269804
1986	63.84519452649396
1987	63.73951642966772
1988	63.8235167162484
1989	64.13767185300662
1990	64.7583670809969
1991	64.32100831743398
1992	63.170632850654506
1993	61.34916364680241
1994	60.19143660144956
1995	60.03274921516144
1996	59.63972549111517
1997	59.450876695806976
1998	59.90931090470006
1999	60.40998322977391
2000	60.73341238223341
2001	60.97911089631487
2002	60.88966448052397
2003	60.62768546769917
2004	60.21615604059434
2005	60.426043496557035
2006	60.99813563396836
2007	61.48557167601691
2008	61.54460991506614
2009	59.4203778046881
2010	58.80950804796999
2011	58.484637989129574
2012	57.754897036442735
2013	57.117438716573766
2014	57.18437419773701
2015	57.55993073966463
2016	58.29635956491466
2017	58.94009941908665
2018	59.564655769118225
2019	59.95899417198861
2020	58.680721108520146
2021	59.19925935255821
2022	60.36798953879519
2023	59.42876558812879