Year	% of total population ages 15+ (national estimate)
1960	54.56
1970	55.35
1975	35.84
1976	37.03
1978	63.93
1980	29.47
1983	64.35
1985	63.88
1987	65.68
1988	65.41
1989	64.63
1990	64.54
1991	64.55
1992	65.02
1993	64.7
1994	64.41
1995	65.56
1996	65.81
1997	65.49
1998	65.97
1999	65.8
2000	64.3
2001	61.754
2002	66.23
2003	61.143
2004	61.524
2005	61.589
2006	61.418
2007	61.259
2008	61.065
2009	61.435
2010	61.434
2011	62.23
2012	61.733
2013	61.446
2014	62.171
2015	61.405
2016	61.59
2017	59.141
2018	58.981
2019	59.444
2020	54.746
2021	56.471
2022	61.439