Year	Percent
1997-01-01	0.41565500000000
1998-01-01	0.57051300000000
1999-01-01	107.77700000000000
2000-01-01	156.67800000000000
2001-01-01	137.44899999999998
2002-01-01	141.41899999999998
2003-01-01	115.16400000000000
2004-01-01	115.61900000000000
2005-01-01	125.60500000000000
2006-01-01	132.92500000000000
2007-01-01	187.74599999999998
2008-01-01	111.32200000000000
2009-01-01	102.76600000000000
2010-01-01	97.94110000000000
2011-01-01	84.45360000000000
2012-01-01	91.61580000000000
2013-01-01	79.12330000000000
2014-01-01	69.38330000000000
2015-01-01	73.70980000000000
2016-01-01	81.87770000000000