Year	Percent
2003-12-31	2.08
2004-12-31	2.1
2005-12-31	2.39
2006-12-31	3.62
2007-12-31	4.3
2008-12-31	2.6
2009-12-31	0.38
2010-12-31	0.8
2011-12-31	0.96
2012-12-31	0.04