Year	Percent
1973-01-01	55.10830000000000
1974-01-01	55.45790000000000
1975-01-01	60.26680000000000
1976-01-01	65.80250000000000
1977-01-01	71.35170000000000
1978-01-01	77.25120000000000
1979-01-01	80.95740000000000
1980-01-01	86.44480000000000
1981-01-01	90.21430000000000
1982-01-01	91.88760000000000
1983-01-01	93.04840000000000
1984-01-01	98.05430000000000
1985-01-01	100.17299999999999
1986-01-01	103.17399999999999
1987-01-01	109.18900000000000
1988-01-01	113.19500000000000
1989-01-01	114.57000000000000
1990-01-01	116.36000000000000
1991-01-01	117.71000000000000
1992-01-01	118.79600000000000
1993-01-01	120.25000000000000
1994-01-01	121.23800000000000
1995-01-01	123.64700000000000
1996-01-01	125.56200000000001
1997-01-01	126.92100000000000
1998-01-01	126.92100000000000
1999-01-01	126.92100000000000
2000-01-01	121.94800000000000
2001-01-01	108.45000000000000
2002-01-01	106.60900000000000
2003-01-01	104.51200000000000
2004-01-01	102.46500000000000
2005-01-01	104.68700000000001
2006-01-01	105.87899999999999
2007-01-01	102.81299999999999
2008-01-01	104.36200000000001
2009-01-01	109.94800000000000
2010-01-01	110.78600000000000
2011-01-01	110.13200000000000
2012-01-01	109.19300000000000
2013-01-01	108.02400000000000
2014-01-01	105.55000000000000
2015-01-01	102.71200000000000
2016-01-01	100.40100000000001