Year	% (national estimate)
1991	79.82870643827525
1993	80.09243409791166
1994	79.85678704856787
1995	78.69867149758456
1996	81.39772796677455
1997	82.85496764370004
1998	82.12868184666804
1999	81.1253789090466
2000	82.6273350564128
2001	80.93167986088868
2002	82.40379931807112
2003	81.85319756108971
2004	82.6732524621667
2005	82.16812906878008
2006	83.40528509328833
2007	82.8582833151001
2008	84.19781432170919
2009	84.71736988264804
2010	83.99707217973231
2011	85.06707046605179
2012	85.93424564543254
2013	84.75447833361474
2014	85.45818254004612
2015	85.2497167529167
2016	87.82372860099079
2017	88.36184551581131
2018	87.28953449983491
2019	87.64759447564121
2020	88.00036921940864
2021	88.20764793847468
2022	87.58061599662467
2023	85.18395390070921