Year	% (national estimate)
1991	75.94677304815633
1992	76.4626687974494
1993	76.9790782795466
1994	78.38773438334633
1995	78.74287015141518
1996	79.14370882763642
1997	79.79619114980478
1998	80.01709525143171
1999	80.44966435599079
2000	80.32423656565129
2001	80.55294344984252
2002	80.76522228187349
2003	81.30228974433652
2004	81.11094380791059
2005	81.22044878409072
2006	81.26113549140713
2007	81.49885884453786
2008	81.95985251315236
2009	82.70765604618018
2010	82.83427370908805
2011	82.89120219456797
2012	82.72596444924964
2013	82.60388601405899
2014	82.80987875248552
2015	82.56909275844951
2016	82.62169186258383
2017	83.06869505368007
2018	83.17557478658401
2019	83.53804705534638
2020	83.4646287495715
2021	83.47384008623058
2022	84.1019471908456
2023	84.65618109907439