Year	% (national estimate)
1963	33.4401182848694
1975	37.39951512058185
1984	56.13239939568741
1985	46.048158640226625
1990	63.857046527309514
1991	59.71085651936716
1992	61.87198898830006
1993	61.2736900780379
1994	62.205801860974276
1995	63.16928069226609
1996	62.98970450594999
1998	66.71102329395002
1999	67.07261755852153
2000	67.67437075646389
2001	70.31120190670752
2002	69.52952145053783
2003	70.59191270495296
2004	69.24930309440094
2005	71.13533408833523
2006	70.37674714965497
2007	71.11158128586919
2008	73.04802700935453
2009	73.27794901644332
2010	73.61710658202473
2011	74.6990482441746
2012	75.51548454213236
2013	73.50600779820164
2014	75.15411523991816
2015	75.68272228792603
2016	76.48559871867958
2017	76.88025339713967
2018	77.58752166377818
2019	78.23080027274119
2020	79.1761247890111
2021	79.66443620452061
2022	77.96831000714495
2023	80.48122329660445