Year	Percent
1973-01-01	49.56570000000000
1974-01-01	49.37150000000000
1975-01-01	52.02910000000000
1976-01-01	52.19650000000000
1977-01-01	56.89610000000000
1978-01-01	62.46010000000000
1979-01-01	67.81710000000000
1980-01-01	71.24450000000000
1981-01-01	72.75250000000000
1982-01-01	72.69340000000000
1983-01-01	71.57010000000000
1984-01-01	71.18980000000000
1985-01-01	72.29480000000000
1986-01-01	74.87490000000000
1987-01-01	78.52410000000000
1988-01-01	87.30090000000000
1989-01-01	94.04620000000000
1990-01-01	93.61550000000000
1991-01-01	93.56400000000000
1992-01-01	94.35630000000000
1993-01-01	96.78910000000000
1994-01-01	98.43720000000000
1995-01-01	101.49100000000000
1996-01-01	106.72900000000000
1997-01-01	109.99700000000001
1998-01-01	109.99700000000001
1999-01-01	109.99700000000001
2000-01-01	139.96400000000000
2001-01-01	121.94900000000000
2002-01-01	121.52000000000000
2003-01-01	121.53800000000000
2004-01-01	122.45200000000001
2005-01-01	125.52500000000000
2006-01-01	123.44200000000001
2007-01-01	121.39200000000001
2008-01-01	121.79200000000000
2009-01-01	128.61700000000002
2010-01-01	127.72000000000000
2011-01-01	128.21600000000000
2012-01-01	131.82000000000000
2013-01-01	132.65200000000002
2014-01-01	132.25100000000000
2015-01-01	129.80200000000002
2016-01-01	126.95900000000000