Year	Percent Change
2001-01-01	2.0539
2002-01-01	1.5680
2003-01-01	1.0621
2004-01-01	1.4585
2005-01-01	1.5227
2006-01-01	2.8291
2007-01-01	1.0559
2008-01-01	1.4748
2009-01-01	1.0000
2010-01-01	0.7954
2011-01-01	0.5479
2012-01-01	0.5124
2013-01-01	1.6480
2014-01-01	1.6645
2015-01-01	0.8002
2016-01-01	0.8129
2017-01-01	1.3075
2018-01-01	1.8000
2019-01-01	2.0000