Year	% of total population ages 15+ (national estimate)
1960	51.46
1970	53.34
1978	61.09
1979	62.33
1980	61.61
1981	61.38
1982	60.96
1984	59.98
1985	58.6
1986	58.608
1987	58.58
1988	58.454
1989	58.915
1990	58.865
1991	60.535
1992	59.42
1993	58.803
1994	58.448
1995	58.137
1996	57.724
1997	57.742
1998	60.59
1999	60.661
2000	60.802
2001	61.428
2002	62.013
2003	61.985
2004	61.519
2005	61.861
2006	62.063
2007	62.205
2008	62.029
2009	61.355
2010	61.225
2011	60.491
2012	60.142
2013	59.281
2014	58.81
2015	58.581
2016	58.445
2017	58.942
2018	59.107
2019	59.249
2020	57.886
2021	57.806
2022	58.616
2023	59.447