Year	Percent of People Ages 15 and Above
1975-01-01	60.75082
1976-01-01	60.84687
1977-01-01	61.12707
1978-01-01	61.80363
1979-01-01	62.47303
1980-01-01	62.86953
1981-01-01	63.63161
1982-01-01	64.25453
1983-01-01	65.08598
1984-01-01	65.81490
1985-01-01	66.47241
1986-01-01	67.10414
1987-01-01	67.86813
1988-01-01	69.99545
1989-01-01	70.56459
1990-01-01	70.85745
1991-01-01	71.65709
1992-01-01	72.29241
1993-01-01	72.83977
1994-01-01	73.35784
1995-01-01	73.87570
1996-01-01	74.41614
1997-01-01	77.05308
1998-01-01	78.65047
1999-01-01	79.06715
2000-01-01	79.31068
2001-01-01	79.64893
2002-01-01	80.11368
2003-01-01	80.77113
2004-01-01	81.30263
2005-01-01	81.37667
2006-01-01	81.43143
2007-01-01	82.06940
2008-01-01	82.61116
2009-01-01	82.98731
2010-01-01	83.58961
2011-01-01	83.48173
2012-01-01	84.45964
2013-01-01	84.64800
2014-01-01	85.05551
2015-01-01	85.35088
2016-01-01	85.64068