Year	Percent
2003-12-31	2.13
2004-12-31	2.12
2005-12-31	2.22
2006-12-31	3.22
2007-12-31	4.34
2008-12-31	4.72
2009-12-31	1.4
2010-12-31	0.9955
2011-12-31	1.5113
2012-12-31	0.6918