Year	% (national estimate)
1990	71.6
1991	69.4
1992	69.8
1993	70.9
1994	71.7
1995	74.2
1997	82.353
1998	79.9
1999	77.217
2000	77.919
2001	77.155
2002	83.888
2003	76.024
2004	80.969
2005	78.034
2006	81.701
2007	83.259
2008	83.146
2009	83.337
2010	83.802
2011	83.395
2012	83.597
2013	82.778
2014	82.286
2015	81.507
2016	80.156
2017	81.727
2018	81.917
2019	82.156
2020	72.393
2021	75.371
2022	79.547
2023	77.159