Year	% of total population ages 15+ (national estimate)
1960	63.75
1970	61.08
1978	47.5
1979	47.54
1980	60.53
1981	81.2
1982	81.7
1983	81.8
1984	81.6
1985	81.5
1986	81.6
1987	82
1988	80.9
1989	80.6
1990	54.89
1991	45.09
1992	58.304
1993	55.66
1994	53.655
1995	52.371
1996	48.316
1997	47.606
1998	48.37
1999	49.305
2000	49.556
2001	48.867
2002	48.916
2003	49.734
2004	49.487
2005	50.172
2006	50.655
2007	50.324
2008	49.909
2009	49.855
2010	50.344
2011	50.677
2012	51.66
2013	52.18
2014	53.681
2015	54.757
2016	55.696
2017	56.274
2018	56.732
2019	57.099
2020	56.9
2021	59.543
2022	60.342
2023	61.045