Year	Percent
1962-01-01	241.070000000000000
1963-01-01	238.944000000000020
1964-01-01	239.921000000000000
1965-01-01	225.247000000000000
1966-01-01	203.930999999999980
1967-01-01	196.639000000000000
1968-01-01	189.629000000000020
1969-01-01	175.422000000000000
1970-01-01	169.182000000000020
1971-01-01	171.680000000000000
1972-01-01	164.145000000000000
1973-01-01	153.793000000000000
1974-01-01	146.802000000000020
1975-01-01	145.897000000000020
1976-01-01	135.676000000000020
1977-01-01	125.603000000000000
1978-01-01	120.415000000000000
1979-01-01	126.113999999999990
1980-01-01	146.671000000000000
1981-01-01	145.797000000000000
1982-01-01	142.398000000000000
1983-01-01	167.367000000000020
1984-01-01	184.805999999999980
1985-01-01	185.139000000000000
1986-01-01	176.562000000000000
1987-01-01	168.263000000000000
1988-01-01	156.864000000000000
1989-01-01	129.868000000000000
1990-01-01	130.332000000000000
1991-01-01	132.827000000000000
1992-01-01	113.943000000000000
1993-01-01	100.290000000000000
1994-01-01	89.115900000000000
1995-01-01	82.266700000000000
1996-01-01	76.925800000000000
1997-01-01	69.267500000000000
1998-01-01	66.999200000000000
1999-01-01	63.221900000000000
2000-01-01	61.570900000000000
2001-01-01	58.266999999999996
2002-01-01	51.814600000000000
2003-01-01	52.396400000000000
2004-01-01	56.929300000000000
2005-01-01	63.760400000000000
2006-01-01	66.730600000000000
2007-01-01	63.041600000000000
2008-01-01	66.025300000000000
2009-01-01	68.280200000000000
2010-01-01	67.673600000000000
2011-01-01	65.621300000000000
2012-01-01	62.637000000000000
2013-01-01	66.412400000000000
2014-01-01	72.916500000000000
2015-01-01	75.329300000000000
2016-01-01	72.160100000000000