Year	Percent
1998-01-01	505.10300000000000
1999-01-01	532.56800000000000
2000-01-01	466.63900000000000
2001-01-01	419.71300000000000
2002-01-01	370.66400000000000
2003-01-01	278.11800000000000
2004-01-01	306.18800000000000
2005-01-01	320.96000000000000
2006-01-01	232.45200000000000
2007-01-01	179.36400000000000
2008-01-01	160.81200000000000
2009-01-01	135.65400000000000
2010-01-01	124.72700000000000
2011-01-01	127.89100000000000
2012-01-01	125.61200000000001
2013-01-01	138.96900000000000
2014-01-01	169.86900000000003
2015-01-01	175.06500000000000
2016-01-01	152.43200000000002