Year	% of total population ages 15+ (national estimate)
1960	35.76
1970	37.31
1980	34.74
1985	37.17
1991	37.51
1994	47.7
1995	54.29
1996	44
1997	42.6
1998	45.9
1999	49.9
2000	50.751
2001	59.066
2002	58.822
2003	56.955
2004	55.216
2005	56.954
2006	58.016
2007	57.202
2008	59.688
2009	58.059
2010	54.171
2011	56.169
2012	55.959
2013	56.219
2014	56.093
2015	57.693
2016	57.965
2017	58.775
2018	58.131
2019	58.327
2020	54.701
2021	55.76
2022	56.942
2023	58.528