Year	Percent
1976-01-01	128.34700000000000
1977-01-01	122.52000000000000
1978-01-01	109.83500000000000
1979-01-01	85.92390000000000
1980-01-01	70.95990000000000
1981-01-01	56.07560000000000
1982-01-01	60.93970000000000
1983-01-01	72.07270000000000
1984-01-01	69.38340000000000
1985-01-01	84.46280000000000
1986-01-01	105.02100000000000
1987-01-01	103.44000000000000
1988-01-01	93.10090000000000
1989-01-01	109.00500000000000
1990-01-01	119.95700000000001
1991-01-01	108.81200000000001
1992-01-01	100.27400000000000
1993-01-01	97.84680000000000
1994-01-01	90.99190000000000
1995-01-01	94.73640000000000
1996-01-01	102.28399999999999
1997-01-01	99.96200000000000
1998-01-01	100.34400000000000
1999-01-01	96.97170000000000
2000-01-01	88.33160000000000
2001-01-01	92.76640000000000
2002-01-01	97.06740000000000
2003-01-01	91.11340000000000
2004-01-01	89.41420000000000
2005-01-01	93.62860000000000
2006-01-01	90.48650000000000
2007-01-01	91.39920000000000
2008-01-01	92.15840000000000
2009-01-01	92.10410000000000
2010-01-01	86.25410000000000
2011-01-01	80.67120000000000
2012-01-01	78.71340000000000
2013-01-01	73.06700000000000
2014-01-01	70.92890000000000
2015-01-01	74.76740000000000
2016-01-01	77.72840000000000