Year	% of total population ages 15+ (national estimate)
1982	77.19017903225456
1990	76.24819975248995
2000	72.82703521711099
2001	74.42903036424653
2002	73.76451209208076
2003	73.10851805264737
2004	72.47756728670471
2005	72.2977252112091
2006	71.97609210022819
2007	71.85349437078368
2008	71.42790713986882
2009	71.31545484798798
2010	70.16014359165959
2011	70.32780039921262
2012	70.12442679752033
2013	70.0591200953492
2014	70.03042809610305
2015	69.89054817220227
2016	70.06903243345955