Year	Percent Change from Year Ago
1998-01-01	4.011813704088330
1999-01-01	-0.205069439004893
2000-01-01	1.210173376432140
2001-01-01	3.316468194744470
2002-01-01	4.522792237533910
2003-01-01	5.418715934397240
2004-01-01	5.258836402657080
2005-01-01	6.750960833988360
2006-01-01	8.452887747735870
2007-01-01	10.799577048688700
2008-01-01	5.629779024911700
2009-01-01	-5.422542313329600
2010-01-01	5.041716665038190
2011-01-01	2.819099517577570
2012-01-01	1.657148687194100
2013-01-01	1.490646437820090
2014-01-01	2.750335016886330
2015-01-01	3.850100604400250
2016-01-01	3.324695295964020
2017-01-01	3.400166311079870