Year	% (national estimate)
1991	81.73603504928806
1993	78.96848137535817
1994	74.29125202499422
1995	74.76655871973976
1996	76.09702122703315
1997	75.77908866021636
1998	76.16368817906549
1999	77.00886218997205
2000	78.02282725002972
2001	77.80146745283713
2002	77.47578835478917
2003	77.82975843704946
2004	77.08406664320076
2005	75.09584711288011
2006	74.29772401066228
2007	74.64086605114892
2008	74.71442797727138
2009	73.86447047770046
2010	74.92408384681153
2011	73.70331188104264
2012	74.13523277412939
2013	74.89692007454036
2014	76.31946383691705
2015	76.52974087161365
2016	77.19290517722375
2017	77.7936878155354
2018	77.13902363505007
2019	77.37339665349961
2020	77.91868649727604
2021	83.04737207128427
2022	83.53656723076466
2023	83.54917278046752