Year	Percent Change From Preceding Period
2004-01-01	15.17804260627270
2005-01-01	13.76299476611010
2006-01-01	4.60296429948951
2007-01-01	-13.10919212890790
2008-01-01	11.24410494063560
2009-01-01	1.21550308723107
2010-01-01	1.81141040922342
2011-01-01	14.69278329936530
2012-01-01	19.81203565369610
2013-01-01	131.04254262362200
2014-01-01	35.77807201913490
2015-01-01	-65.63091161272660
2016-01-01	7.55515345180500
2017-01-01	13.06412994466500