Year	Percent Change From Preceding Period
2004-01-01	43.52543930096020
2005-01-01	22.96095940827720
2006-01-01	13.30469921399290
2007-01-01	12.24928418367590
2008-01-01	12.46453380890550
2009-01-01	13.72051582848210
2010-01-01	14.48011687904760
2011-01-01	13.48353762793460
2012-01-01	10.28467589829920
2013-01-01	8.78249186830954
2014-01-01	7.29825014419267
2015-01-01	9.15948925574696
2016-01-01	30.69441508067210
2017-01-01	29.84447990156770
2018-01-01	20.46141464734060
2019-01-01	15.76513605678960