Year	Percent
1960-01-01	40.26780000000000
1961-01-01	38.53580000000000
1962-01-01	38.73830000000000
1963-01-01	40.22700000000000
1964-01-01	49.17610000000000
1965-01-01	58.37170000000000
1966-01-01	61.28280000000000
1967-01-01	64.31650000000000
1968-01-01	69.32430000000000
1969-01-01	72.16810000000000
1970-01-01	70.89300000000000
1971-01-01	72.35170000000000
1972-01-01	73.76970000000000
1973-01-01	74.41490000000000
1974-01-01	74.33140000000000
1975-01-01	71.32690000000000
1976-01-01	72.20390000000000
1977-01-01	75.23530000000000
1978-01-01	75.88090000000000
1979-01-01	75.40760000000000
1980-01-01	72.55199999999999
1981-01-01	76.59590000000000
1982-01-01	80.49610000000000
1983-01-01	80.32640000000000
1984-01-01	80.03900000000000
1985-01-01	82.60720000000000
1986-01-01	88.03480000000000
1987-01-01	86.80680000000000
1988-01-01	85.96390000000000
1989-01-01	93.85690000000000
1990-01-01	111.44800000000000
1991-01-01	123.75000000000000
1992-01-01	124.56700000000001
1993-01-01	114.29100000000000
1994-01-01	100.66500000000000
1995-01-01	93.45360000000000
1996-01-01	91.73299999999999
1997-01-01	90.49790000000000
1998-01-01	90.34570000000000
1999-01-01	90.99520000000000
2000-01-01	64.22480000000000
2001-01-01	65.63990000000000
2002-01-01	92.01000000000000
2003-01-01	93.08170000000000
2004-01-01	93.39790000000000
2005-01-01	97.65770000000000
2006-01-01	101.77700000000000
2007-01-01	107.54600000000000
2008-01-01	117.51000000000000
2009-01-01	124.79200000000000
2010-01-01	120.28900000000000
2011-01-01	123.12100000000001
2012-01-01	127.58500000000000
2013-01-01	129.39300000000000
2014-01-01	128.48400000000000
2015-01-01	125.40299999999999
2016-01-01	125.42500000000000