Year	Percent
1983-01-01	242.08800000000000
1984-01-01	254.93900000000002
1985-01-01	268.48700000000000
1986-01-01	327.17800000000000
1987-01-01	313.28400000000000
1988-01-01	212.43000000000000
1989-01-01	203.37800000000000
1990-01-01	105.18100000000000
1991-01-01	88.25820000000000
1992-01-01	91.86250000000000
1993-01-01	93.56230000000000
1994-01-01	103.40000000000000
1995-01-01	107.22700000000000
1996-01-01	88.59460000000000
1997-01-01	112.94000000000000
1998-01-01	106.91000000000000
1999-01-01	135.23400000000000
2000-01-01	125.26799999999999
2001-01-01	100.62500000000000
2002-01-01	110.97000000000000
2003-01-01	114.13200000000000
2004-01-01	117.19200000000001
2005-01-01	148.83400000000000
2006-01-01	151.12600000000000
2007-01-01	176.65000000000000
2008-01-01	148.43900000000000
2009-01-01	146.01400000000000
2010-01-01	124.37500000000000
2011-01-01	93.64900000000000
2012-01-01	73.30140000000000
2013-01-01	66.94450000000000
2014-01-01	64.99950000000000
2015-01-01	81.31990000000000
2016-01-01	75.00890000000000