Year	Percent
1997-01-01	2.2808400000000000
1998-01-01	5.0702500000000000
1999-01-01	2.5393000000000000
2000-01-01	2.5393000000000000
2001-01-01	2.5393000000000000
2002-01-01	2.5393000000000000
2003-01-01	0.5282800000000000
2004-01-01	1.4882400000000000
2005-01-01	0.7907489999999999
2006-01-01	0.5455800000000001
2007-01-01	0.3304110000000000
2008-01-01	0.5137320000000000
2009-01-01	2.5444500000000000
2010-01-01	1.1467900000000000
2011-01-01	1.5051500000000000
2012-01-01	1.5576200000000000