Year	Percent
2001-01-01	4.150
2002-01-01	4.400
2003-01-01	5.150
2004-01-01	5.600
2005-01-01	6.025
2006-01-01	5.175
2007-01-01	4.100
2008-01-01	4.000
2009-01-01	6.400
2010-01-01	6.300
2011-01-01	5.675
2012-01-01	6.100
2013-01-01	6.025
2014-01-01	6.025
2015-01-01	5.775
2016-01-01	5.650
2017-01-01	5.525