Year	Percent
2003-01-01	6.150
2004-01-01	6.075
2005-01-01	6.050
2006-01-01	5.925
2007-01-01	5.850
2008-01-01	5.575
2009-01-01	5.700
2010-01-01	5.800
2011-01-01	6.300
2012-01-01	6.450
2013-01-01	6.675
2014-01-01	7.100
2015-01-01	7.600
2016-01-01	7.575
2017-01-01	7.425