Year	% (national estimate)
1991	63.8
1992	65.8
1993	65.3
1994	62.6
1995	62
1996	75.69
1998	65.4
1999	65.6
2000	74.83
2001	72.933
2002	71.91
2003	70.647
2004	71.752
2005	70.158
2006	71.658
2007	71.794
2008	71.45
2009	69.484
2010	69.174
2011	69.651
2012	70.278
2013	69.934
2014	70.576
2015	72.304
2016	72.917
2017	73.093
2018	75.064
2019	75.334
2020	71.049
2021	72.733
2022	74.389
2023	74.205