Year	% of total population ages 15+ (national estimate)
1982	74.78380826792741
1990	74.309575086601
2000	71.38022096157836
2001	72.79354354985936
2002	72.12990698911257
2003	71.59199870430903
2004	71.05017196819585
2005	70.85752930326333
2006	70.5808048207801
2007	70.56022984086404
2008	70.11937624377349
2009	70.03370517022253
2010	69.01059659628184
2011	69.1429808742819
2012	68.95906613513661
2013	68.92973751482725
2014	68.9465345128527
2015	68.86896967639365
2016	69.04090050720635