Year	% of total population ages 15+ (national estimate)
1960	60.38
1965	61.77
1970	60.95
1974	63.42
1976	64.16
1977	64.9
1978	65.53
1979	65.07
1981	65.64
1983	65.497
1984	66.494
1985	66.725
1986	67.518
1987	66.743
1988	67.882
1989	67.668
1990	68.124
1991	67.826
1992	68.108
1993	67.367
1994	64.375
1995	64.605
1996	65.196
1997	65.441
1998	65.179
1999	65.801
2000	65.536
2001	65.151
2002	65.638
2003	65.478
2004	65.932
2005	65.649
2006	65.933
2007	65.713
2008	65.085
2009	64.395
2010	63.497
2011	63.048
2012	62.312
2013	61.419
2014	61.258
2015	61.317
2016	61.652
2017	61.716
2018	61.817
2019	62.375
2020	62.018
2021	62.553
2022	63.371
2023	63.65