Year	% (national estimate)
1991	66.0838172145994
1992	68.68789967936496
1993	68.49642265115648
1994	69.18299575849187
1995	70.50326825880367
1996	70.69284061481905
1997	70.97390211541965
1998	71.36118054671617
1999	72.14025525090652
2000	73.0282556909708
2001	73.36293865110653
2002	73.77056990971164
2003	74.44179826299697
2004	74.81702516863623
2005	75.3680641181873
2006	76.00354833439748
2007	76.55697850879297
2008	76.77579446732567
2009	77.75693729217323
2010	77.97827472725767
2011	78.89280222701771
2012	79.34340368548624
2013	79.75265837218475
2014	80.12449513659645
2015	80.22190185929885
2016	80.55926120864287
2017	80.76111153627791
2018	80.84341482176839
2019	81.15660845131704
2020	81.05115651598786
2021	81.83951501003244
2022	82.34144794822906
2023	82.15690897788669