Year	% of total population ages 15+ (national estimate)
1982	77.19017903225455
1990	76.24819975248995
2000	72.826838968275
2001	74.42903036424653
2002	73.76453323179182
2003	73.10851805264736
2004	72.4775672867047
2005	72.29767095842071
2006	71.97609210022819
2007	71.85349437078366
2008	71.42790713986882
2009	71.315454847988
2010	70.16014359165962
2011	70.32777318901749
2012	70.12442679752033
2013	70.05911414091997
2014	70.03037647327847
2015	69.89054817220229
2016	70.06903243345955