Year	Percent
1999-01-01	0.28116700000000000
2000-01-01	0.26199000000000000
2001-01-01	0.25511300000000003
2002-01-01	0.35362200000000000
2003-01-01	0.98531200000000010
2004-01-01	1.47187999999999990
2005-01-01	1.56992999999999980
2006-01-01	2.38447000000000000
2007-01-01	2.84985000000000000
2008-01-01	2.19799000000000030
2009-01-01	1.61517999999999980
2010-01-01	1.49827000000000000
2011-01-01	1.99720000000000000
2012-01-01	2.44759000000000000