Year	Percent
2003-01-01	4.600
2004-01-01	5.100
2005-01-01	4.375
2006-01-01	4.725
2007-01-01	4.100
2008-01-01	3.725
2009-01-01	5.100
2010-01-01	5.500
2011-01-01	5.650
2012-01-01	5.900
2013-01-01	6.475
2014-01-01	6.875
2015-01-01	6.775
2016-01-01	6.300
2017-01-01	5.775