Year	Percent
2004-01-01	1.5596900000000000
2005-01-01	1.4974200000000000
2006-01-01	1.7454700000000000
2007-01-01	1.8948599999999998
2008-01-01	1.8948599999999998
2009-01-01	1.8948599999999998
2010-01-01	1.8948599999999998
2011-01-01	1.5944700000000000
2012-01-01	1.4904200000000000