Year	Percent of People Ages 15 and Above
1978-01-01	45.92640
1979-01-01	46.39663
1980-01-01	46.94396
1981-01-01	47.52019
1982-01-01	48.16667
1983-01-01	48.36862
1984-01-01	49.19871
1985-01-01	50.04015
1986-01-01	51.05814
1987-01-01	51.56526
1988-01-01	52.53544
1989-01-01	53.41984
1990-01-01	54.36569
1991-01-01	55.44517
1992-01-01	56.34638
1993-01-01	57.06204
1994-01-01	57.87990
1995-01-01	58.83360
1996-01-01	60.35684
1997-01-01	61.03267
1998-01-01	62.21463
1999-01-01	63.24747
2000-01-01	64.12604
2001-01-01	65.35204
2002-01-01	66.50626
2003-01-01	69.14341
2004-01-01	70.10079
2005-01-01	70.69717
2006-01-01	68.56241
2007-01-01	69.06261
2008-01-01	70.00262
2009-01-01	68.66351
2010-01-01	69.63679
2011-01-01	71.37224
2012-01-01	72.48431
2013-01-01	72.74568
2014-01-01	73.32167
2015-01-01	73.74158
2016-01-01	74.15789