Year	Percent
1993-01-01	86.96680000000000
1994-01-01	81.67930000000000
1995-01-01	71.67940000000000
1996-01-01	59.33130000000000
1997-01-01	64.17730000000000
1998-01-01	82.25120000000000
1999-01-01	98.16240000000000
2000-01-01	102.53700000000000
2001-01-01	115.38300000000000
2002-01-01	133.00600000000000
2003-01-01	145.21300000000000
2004-01-01	158.57500000000000
2005-01-01	178.82400000000000
2006-01-01	201.12300000000000
2007-01-01	224.85000000000000
2008-01-01	257.32200000000000
2009-01-01	257.32200000000000
2010-01-01	212.52200000000002
2011-01-01	208.66400000000002
2012-01-01	189.89500000000000
2013-01-01	159.64000000000000
2014-01-01	137.39800000000000
2015-01-01	122.58000000000000
2016-01-01	111.54200000000000