Year	% (national estimate)
1991	83.39731285988485
1993	73.45088019765844
1994	73.57175838475423
1995	73.32241309308804
1996	72.5326392678729
1997	72.83256493871583
1998	73.35922055916409
1999	73.83560285094866
2000	73.9375107394467
2001	73.90665090667974
2002	73.54809830479105
2003	73.96007745730384
2004	73.85002045706936
2005	73.72083205962414
2006	73.74071858907966
2007	72.83968683690642
2008	72.31540672101345
2009	72.52042519546691
2010	72.48251131620717
2011	73.27448308549084
2012	73.92710995553323
2013	74.79580444235515
2014	74.57771260997067
2015	75.35432839331921
2016	75.84119324413248
2017	76.28599772415603
2018	76.80073338959869
2019	76.73091795193557
2020	76.05249251365159
2021	76.34974283614989
2022	76.82711285238753
2023	75.50043770061276