Year	Percent
1960-01-01	211.451000000000000
1961-01-01	217.255000000000000
1962-01-01	211.595999999999980
1963-01-01	199.950000000000000
1964-01-01	204.805999999999980
1965-01-01	214.351000000000000
1966-01-01	216.416000000000000
1967-01-01	184.004000000000020
1968-01-01	168.279000000000020
1969-01-01	172.175000000000000
1970-01-01	177.355000000000000
1971-01-01	166.553000000000000
1972-01-01	148.988000000000000
1973-01-01	137.196000000000000
1974-01-01	135.306000000000000
1975-01-01	130.236000000000000
1976-01-01	116.767000000000010
1977-01-01	106.116000000000000
1978-01-01	100.082000000000010
1979-01-01	94.810700000000000
1980-01-01	89.431900000000000
1981-01-01	73.765500000000000
1982-01-01	58.166700000000000
1983-01-01	58.075600000000000
1984-01-01	59.056500000000000
1985-01-01	57.876500000000000
1986-01-01	56.735400000000000
1987-01-01	57.300200000000000
1988-01-01	53.903600000000000
1989-01-01	48.353000000000000
1990-01-01	45.816900000000000
1991-01-01	40.974800000000000
1992-01-01	41.803999999999995
1993-01-01	49.782500000000000
1994-01-01	52.843100000000000
1995-01-01	50.585000000000000
1996-01-01	47.634900000000000
1997-01-01	72.231300000000000
1998-01-01	153.759000000000000
1999-01-01	177.844000000000020
2000-01-01	176.013000000000000
2001-01-01	168.606000000000000
2002-01-01	164.995999999999980
2003-01-01	161.129000000000000
2004-01-01	155.012000000000000
2005-01-01	155.530000000000000
2006-01-01	158.581000000000020
2007-01-01	171.097000000000000
2008-01-01	199.245000000000000
2009-01-01	201.262000000000000
2010-01-01	182.177000000000020
2011-01-01	181.293000000000000
2012-01-01	192.815000000000000
2013-01-01	199.583000000000000
2014-01-01	204.733000000000000
2015-01-01	208.215000000000000
2016-01-01	211.514000000000000