Year	% (national estimate)
1983	65.27582027774245
1984	65.08177572615432
1986	63.555210475918024
1987	63.429440296034706
1988	63.554649944699314
1989	63.83059103442727
1990	64.73333474907747
1991	64.16505192256187
1992	63.662284972961395
1993	61.97502825298232
1994	60.90621143566909
1995	61.23293926845019
1996	60.295720297987444
1997	60.11783432111015
1998	60.40304394566258
1999	60.508030790998255
2000	60.26320215059878
2001	60.27766359769783
2002	59.7478367693849
2003	59.4831914885725
2004	59.12862567916509
2005	59.44513196387531
2006	60.15769300693949
2007	60.84274129143389
2008	61.142671717572824
2009	59.26460564258121
2010	58.83471359529507
2011	58.557672240202784
2012	58.0357753289077
2013	57.58411453117851
2014	57.87952604353471
2015	58.320045710462615
2016	59.05290959469489
2017	59.847208452750984
2018	60.4685528259313
2019	60.91386734385927
2020	59.814898931300256
2021	59.97979628570424
2022	60.99738668913883
2023	60.26428408874833