Year	Percent
2004-12-31	4.46
2005-12-31	4.67
2006-12-31	4.74
2007-12-31	5.82
2008-12-31	5.19
2009-12-31	0.78
2010-12-31	0.5332
2011-12-31	0.6421
2012-12-31	0.5902