Year	Percent Change From Preceding Period
2004-01-01	83.86680991549150
2005-01-01	81.85154130100680
2006-01-01	44.96471627176800
2007-01-01	33.91626168732520
2008-01-01	22.77733267542850
2009-01-01	39.32217111298690
2010-01-01	35.81384810809880
2011-01-01	15.44936947029370
2012-01-01	10.97194292201010
2013-01-01	-3.27768973098170
2014-01-01	-1.40895093908848
2015-01-01	9.00166878210407
2016-01-01	6.64544926335215
2017-01-01	1.27255920933353