Year	% (national estimate)
1991	69.04124337491919
1992	71.23554077591002
1993	71.68082883455214
1994	72.30137033769388
1995	72.6429921939816
1996	73.08085452408224
1997	73.50653820874716
1998	73.74432383613049
1999	74.05578547090408
2000	74.38533886269744
2001	74.79129718569254
2002	75.21749045119819
2003	76.26295382528129
2004	76.65368854350088
2005	76.86682589141542
2006	76.6703481498469
2007	76.8192687815505
2008	76.74525855453106
2009	77.40800927279821
2010	78.56787206276135
2011	78.10111375073198
2012	78.28544779264611
2013	78.38648683396102
2014	78.85379805742127
2015	78.78642297376948
2016	78.73115039055256
2017	78.51886567785766
2018	78.80675310719724
2019	79.33694812808262
2020	79.49091249605002
2021	79.88145177813878
2022	80.46313147633764
2023	81.13360364527225