Year	% of total population ages 15+ (national estimate)
1962	55.09
1968	53.87
1975	53.51
1979	54.73
1980	54.89
1981	54.77
1982	54.78
1983	57.463
1984	57.308
1985	57.146
1986	57.343
1987	56.839
1988	56.306
1989	56.17
1990	55.854
1991	55.406
1992	55.558
1993	55.552
1994	55.48
1995	55.444
1996	55.77
1997	55.445
1998	55.459
1999	55.747
2000	55.701
2001	55.499
2002	55.714
2003	56.406
2004	56.254
2005	55.949
2006	55.88
2007	55.982
2008	56.07
2009	56.332
2010	56.25
2011	56.029
2012	56.263
2013	56.432
2014	56.098
2015	56.06
2016	55.933
2017	55.638
2018	55.624
2019	55.272
2020	54.535
2021	55.888
2022	56.177
2023	56.317