Year	Percent
1960-01-01	321.34800000000000
1961-01-01	323.28000000000000
1962-01-01	298.12700000000000
1963-01-01	254.63000000000000
1964-01-01	283.03600000000000
1965-01-01	380.00000000000000
1966-01-01	395.02099999999996
1967-01-01	273.37500000000000
1968-01-01	290.70300000000000
1969-01-01	273.17300000000000
1970-01-01	232.42300000000000
1971-01-01	190.37400000000002
1972-01-01	165.08100000000000
1973-01-01	155.32600000000000
1974-01-01	176.55900000000003
1975-01-01	215.62200000000000
1976-01-01	206.01000000000000
1977-01-01	160.20100000000000
1978-01-01	150.49000000000000
1979-01-01	180.71099999999998
1980-01-01	199.89500000000000
1981-01-01	185.82400000000000
1982-01-01	204.36900000000003
1983-01-01	237.92300000000000
1984-01-01	191.38900000000000
1985-01-01	147.65900000000000
1986-01-01	141.41000000000000
1987-01-01	142.19200000000000
1988-01-01	130.11100000000000
1989-01-01	107.30100000000000
1990-01-01	90.98440000000000
1991-01-01	92.77340000000000
1992-01-01	94.30300000000000
1993-01-01	91.55070000000000
1994-01-01	92.31790000000000
1995-01-01	76.30720000000000
1996-01-01	62.37430000000000
1997-01-01	66.48880000000000
1998-01-01	79.34700000000000
1999-01-01	87.98270000000000
2000-01-01	85.15190000000000
2001-01-01	81.98030000000000
2002-01-01	78.84480000000000
2003-01-01	79.11410000000000
2004-01-01	77.31100000000000
2005-01-01	82.29650000000000
2006-01-01	96.43040000000000
2007-01-01	94.08600000000000
2008-01-01	96.22890000000000
2009-01-01	107.96300000000000
2010-01-01	106.00700000000000
2011-01-01	110.92299999999999
2012-01-01	114.44200000000001
2013-01-01	109.54500000000000
2014-01-01	101.32000000000000
2015-01-01	101.01299999999999
2016-01-01	107.59000000000000