Year	Percent
2003-12-31	2.09
2004-12-31	2.11
2005-12-31	2.42
2006-12-31	3.64
2007-12-31	4.53
2008-12-31	2.82
2009-12-31	0.48
2010-12-31	0.9
2011-12-31	1.13
2012-12-31	0.08