Year	% of total population ages 15+ (national estimate)
1960	52.81
1970	50.89
1980	67.4
1981	67.89
1982	67.93
1983	68.11
1984	68.27
1985	68.82
1986	70.37
1987	71.27
1988	71.08
1989	69.75
1990	69.47
1991	68.48
1992	68.399
1993	68.106
1994	68.515
1995	69.419
1996	71.067
1997	72.727
1998	73.864
1999	73.519
2000	73.796
2001	73.853
2002	74.111
2003	72.806
2004	72.559
2005	72.193
2006	71.855
2007	72.642
2008	73.763
2009	72.678
2010	71.85
2011	71.314
2012	71.42
2013	71.115
2014	70.889
2015	70.995
2016	70.518
2017	69.725
2018	70.064
2019	67.115
2020	63.805
2021	65.966
2022	65.727
2023	65.677