Year	% (national estimate)
1976	51.32113821138211
1985	67.6474613384426
1986	69.45704467353953
1987	70.01651982378854
1988	70.97086037840079
1989	70.49792531120332
1990	71.05045492142266
1991	71.65267648273014
1992	72.41895941160446
1993	73.67205542725172
1995	71.997888624967
1996	73.0459997363912
1997	73.81611924548213
1998	74.23724355602315
1999	75.46076882569774
2001	66.42988364972443
2002	67.48884481903818
2003	67.88643533123027
2015	73.17073170731707
2017	96.80546075085323
2018	98.04461580831727
2019	98.55332047395977
2020	98.20209059233449
2021	99.84522301955818
2022	99.6882969679796