Year	Percent
1998-01-01	3.14944000000000020
1999-01-01	5.40011000000000000
2000-01-01	5.84561000000000000
2001-01-01	2.56399999999999960
2002-01-01	1.24556000000000000
2003-01-01	0.41918900000000003
2004-01-01	0.37421700000000000
2005-01-01	0.32840700000000000
2006-01-01	0.24724200000000002
2007-01-01	0.24612699999999998
2008-01-01	0.38448200000000000
2009-01-01	0.74769200000000000
2010-01-01	1.11892000000000010
2011-01-01	1.30562000000000000