Year	% of total population ages 15+ (national estimate)
1964	52.78
1973	50.82
1978	49.4
1979	50.65
1980	52.26
1981	48.4
1985	49.87
1987	57.74
1989	57.67
1994	49.85
1999	48.37
2000	65.4
2002	67.2
2003	67.776
2004	63.112
2006	66.15
2010	60.459
2011	61.401
2012	65.118
2013	60.22
2014	60.732
2015	60.596
2016	60.689
2017	60.943
2018	60.503
2019	59.169
2021	62.937
2022	60.241