Year	Percent
2001-01-01	3.875
2002-01-01	4.050
2003-01-01	4.750
2004-01-01	5.375
2005-01-01	5.975
2006-01-01	5.325
2007-01-01	4.400
2008-01-01	4.325
2009-01-01	6.200
2010-01-01	6.450
2011-01-01	5.775
2012-01-01	5.900
2013-01-01	6.075
2014-01-01	5.975
2015-01-01	5.800
2016-01-01	5.500
2017-01-01	5.375