Year	Percent of People Ages 15 and Above
1973-01-01	42.82216
1974-01-01	43.31976
1975-01-01	43.85004
1976-01-01	44.41685
1977-01-01	44.98234
1978-01-01	45.66755
1979-01-01	46.37866
1980-01-01	47.14337
1981-01-01	47.89356
1982-01-01	48.69104
1983-01-01	49.42488
1984-01-01	50.38870
1985-01-01	51.36992
1986-01-01	52.51943
1987-01-01	53.21982
1988-01-01	54.34073
1989-01-01	55.39388
1990-01-01	57.83767
1991-01-01	59.07494
1992-01-01	60.04862
1993-01-01	60.90978
1994-01-01	61.86669
1995-01-01	63.33888
1996-01-01	64.77112
1997-01-01	65.62785
1998-01-01	66.84308
1999-01-01	67.91677
2000-01-01	68.91087
2001-01-01	70.05267
2002-01-01	70.49975
2003-01-01	73.75778
2004-01-01	74.68318
2005-01-01	75.13866
2006-01-01	74.42168
2007-01-01	74.99793
2008-01-01	75.59986
2009-01-01	75.54781
2010-01-01	76.39718
2011-01-01	77.13008
2012-01-01	77.64802
2013-01-01	78.01983
2014-01-01	78.48583
2015-01-01	79.24977
2016-01-01	79.64689