Year	Percent
2000-01-01	3.69
2001-01-01	3.72
2002-01-01	3.84
2003-01-01	4.27
2004-01-01	4.52
2005-01-01	5.90
2006-01-01	5.13
2007-01-01	5.24
2008-01-01	4.35
2009-01-01	4.11
2010-01-01	3.83
2011-01-01	3.51
2012-01-01	3.48
2013-01-01	3.35