Year	% of total population ages 15+ (national estimate)
1961	57.29
1966	56.66
1971	54.97
1975	54.09
1977	52.4
1981	52.97
1983	54.97
1984	54.009
1985	53.33
1986	53.414
1987	53.586
1988	53.171
1989	52.711
1990	52.951
1991	53.197
1992	52.575
1993	53.327
1994	53.916
1995	53.923
1996	54.85
1997	55.436
1998	56.449
1999	57.949
2000	58.981
2001	59.18
2002	59.597
2003	59.694
2004	60.066
2005	61.466
2006	62.741
2007	66.625
2008	65.939
2009	64.087
2010	62.6
2011	61.963
2012	61.638
2013	61.963
2014	61.753
2015	61.815
2016	62.178
2017	61.978
2018	62.163
2019	62.338
2020	61.12
2021	63.637
2022	64.638
2023	65.489