Year	% of total population ages 15+ (national estimate)
1960	50.1
1966	51.68
1970	56.25
1975	61.29
1979	37.8
1980	59.006
1981	58.514
1982	58.635
1983	57.676
1984	55.831
1985	56.595
1986	57.1
1987	58.275
1988	58.462
1989	59.547
1990	60.023
1991	60.599
1992	60.893
1993	60.892
1994	61.596
1995	61.935
1996	62.106
1997	62.502
1998	60.617
1999	60.596
2000	61.568
2001	61.879
2002	62.447
2003	61.885
2004	62.692
2005	62.554
2006	62.521
2007	62.445
2008	61.969
2009	61.284
2010	61.362
2011	61.531
2012	61.714
2013	61.896
2014	62.909
2015	63.175
2016	63.195
2017	63.479
2018	63.364
2019	63.57
2020	62.811
2021	63.078
2022	64.206
2023	64.602