Year	Percent Change From Preceding Period
2004-01-01	65.09410715146360
2005-01-01	54.29021871522090
2006-01-01	97.77051475894470
2007-01-01	79.94325548627520
2008-01-01	62.64299910437940
2009-01-01	60.50249453117430
2010-01-01	19.17783273404270
2011-01-01	28.80007843657790
2012-01-01	24.21081009581250
2013-01-01	15.02550419124220
2014-01-01	1.14642668389198
2015-01-01	17.61471838209230
2016-01-01	-1.75361131184904
2017-01-01	-1.26125075778511