Year	Percent
1997-01-01	17.7691000000000000
1998-01-01	12.6650000000000000
1999-01-01	14.4589000000000000
2000-01-01	11.3898000000000000
2001-01-01	6.6958400000000000
2002-01-01	5.1435500000000000
2003-01-01	2.7050200000000000
2004-01-01	3.9076600000000000
2005-01-01	2.5970900000000000
2006-01-01	6.7357200000000000
2007-01-01	7.0013600000000010
2008-01-01	5.1091100000000000
2009-01-01	9.2270800000000000
2010-01-01	5.0608800000000000
2011-01-01	-17.7320000000000000
2012-01-01	5.1708000000000000
2013-01-01	7.6221800000000000
2014-01-01	5.8186800000000005
2015-01-01	7.9006500000000000
2016-01-01	15.1090000000000020