Year	% (national estimate)
1965	49.79994665244065
1975	71.44972405438146
1976	72.66811279826464
1982	85.96832814122534
1983	87.15273248989173
1984	88.49232384201548
1985	88.99346405228758
1986	93.96873541763883
1987	94.62453358208955
1989	94.77809798270893
1990	91.93614989547578
1991	91.72824915256439
1992	91.83551689386303
1993	91.62275294978258
1994	91.05440460441075
1995	91.9578719206347
1996	87.68553478347269
1997	86.47369630140133
1998	83.84917972799903
1999	86.10653235653236
2000	87.52557822285608
2001	87.46735902830626
2002	87.97884612503559
2003	88.27169743466794
2004	87.8828348914332
2005	87.57109847138287
2006	87.63388366175514
2007	88.02837674404884
2008	87.70440113218062
2009	88.22271079683878
2010	90.82751339938282
2011	91.78749188487339
2012	92.32850032460505
2013	92.49872060764403
2014	92.4873205133352
2015	93.37533922669749
2016	93.59241298711767
2017	93.43969979640447
2018	93.88465781463907
2019	93.96925763267899
2020	92.50988999434858
2021	90.2698691327368
2022	90.48112993065817
2023	91.15519121040933