Year	Percent
1999-01-01	1.7385300000000000
2000-01-01	1.9383400000000002
2001-01-01	2.9567600000000000
2002-01-01	4.9249300000000010
2003-01-01	5.6304800000000000
2004-01-01	5.0208900000000005
2005-01-01	4.3308200000000000
2006-01-01	3.7378199999999997
2007-01-01	3.7378199999999997
2008-01-01	3.7378199999999997
2009-01-01	3.7378199999999997
2010-01-01	3.7378199999999997
2011-01-01	4.0158900000000000
2012-01-01	4.3411300000000010