Year	% of total population ages 15+ (national estimate)
1960	51.1
1970	54.03
1979	52.66
1981	53.69
1991	54.1
1992	57.3
1993	52.9
1994	52.5
1996	62.35
1997	62.24
1998	64.34
2000	58.514
2001	57.276
2002	57.568
2003	56.633
2004	56.853
2005	56.623
2006	57.305
2007	57.21
2008	57.585
2009	55.47
2010	56.706
2011	58.157
2012	59.431
2013	59.269
2014	59.529
2015	62.007
2016	62.451
2017	62.367
2018	63.771
2019	65.189
2020	60.365
2021	63.174
2022	63.224
2023	64.282