Year	Percent
1973-01-01	131.81600000000000
1974-01-01	133.55900000000000
1975-01-01	136.66800000000000
1976-01-01	142.05700000000002
1977-01-01	147.46400000000000
1978-01-01	152.04900000000000
1979-01-01	156.35900000000000
1980-01-01	163.43800000000000
1981-01-01	166.92100000000000
1982-01-01	174.32600000000000
1983-01-01	183.88099999999997
1984-01-01	188.82400000000000
1985-01-01	191.36400000000000
1986-01-01	199.85800000000000
1987-01-01	211.11100000000000
1988-01-01	216.06400000000002
1989-01-01	221.17900000000000
1990-01-01	221.74000000000000
1991-01-01	221.50900000000001
1992-01-01	226.90099999999998
1993-01-01	234.63200000000000
1994-01-01	238.25599999999997
1995-01-01	240.03099999999998
1996-01-01	241.54900000000000
1997-01-01	226.49599999999998
1998-01-01	215.43000000000000
1999-01-01	224.22400000000002
2000-01-01	225.79200000000000
2001-01-01	189.13600000000000
2002-01-01	146.93000000000000
2003-01-01	146.25900000000000
2004-01-01	146.84100000000000
2005-01-01	148.46100000000000
2006-01-01	151.18100000000000
2007-01-01	149.15900000000000
2008-01-01	156.00700000000000
2009-01-01	172.53099999999998
2010-01-01	176.02300000000000
2011-01-01	182.53700000000000
2012-01-01	183.30700000000002
2013-01-01	180.15000000000000
2014-01-01	176.38299999999998
2015-01-01	165.51000000000000
2016-01-01	158.29500000000000