Year	% (national estimate)
1996	74.3
1997	72.2
1998	72
1999	71.8
2000	70.7
2001	71
2002	70.9
2003	70.4
2004	69.88
2007	72.841
2009	74.511
2010	75.321
2011	75.512
2012	75.405
2013	76.008
2014	76.076
2015	75.771
2016	75.141
2017	74.701
2018	74.737
2019	74.359
2020	71.742
2021	71.159
2022	72.503