Year	% of total population ages 15+ (national estimate)
1961	32.36
1972	29.96
1976	49.3
1977	49.3
1978	49.3
1979	49.3
1980	49.3
1981	51.19
1982	51.2
1983	49.72
1984	49.71
1985	49.45
1986	48.89
1988	49.34
1989	32.2
1990	49.35
1991	49.68
1992	49.68
1993	49.2
1994	49.15
1995	48.36
1997	50.12
1998	49.95
2000	50.41
2002	50.45
2004	50.73
2005	46.56
2006	50.032
2007	50.045
2008	50.084
2009	50.535
2010	50.997
2011	50.775
2012	48.627
2013	51.451
2014	50.997
2015	52.026
2016	48.93
2018	50.994
2019	51.597
2021	52.73