Year	% (national estimate)
1989	82.63673890608875
1996	73.72869216444636
1997	76.25710537822475
1998	75.68450984990619
1999	74.08891857789654
2000	75.44483438000246
2001	77.89427968730612
2002	77.67517078773956
2003	78.39183585379766
2004	77.29509070691992
2005	77.24356532207678
2006	77.28274862021513
2007	76.9183983781044
2008	79.04319834449458
2009	81.35340364905788
2010	82.90639030690694
2011	81.25373225742241
2012	81.79396092362344
2013	81.730871031656
2014	80.34554312522555
2015	80.2907796157555
2016	81.93223470512858
2017	81.37552717727903
2018	81.61955043362535
2019	81.86121728903265
2020	81.71185229476878
2021	80.68023169463835
2022	81.93229028551224
2023	82.0533227218464