Year	% of total population ages 15+ (national estimate)
1960	60.45
1970	62.35
1978	46.93
1979	47.21
1980	60.1
1985	51.52
1986	51.7
1988	52.17
1989	52.59
1990	63.98
1991	64.863
1992	64.741
1993	65.059
1994	64.122
1995	64.168
1996	67.498
1997	67.362
1998	67.97
1999	67.795
2000	67.36
2001	67.801
2002	67.72
2003	67.846
2004	67.274
2005	66.976
2006	67.351
2007	67.622
2008	68.187
2009	68.233
2010	66.999
2011	67.456
2012	67.524
2013	67.537
2014	67.909
2015	68.148
2016	68.569
2017	68.444
2018	68.484
2019	68.231
2020	67.866
2021	67.376
2022	66.64
2023	67.57