Year	Percent
2001-01-01	4.650
2002-01-01	4.525
2003-01-01	4.725
2004-01-01	4.900
2005-01-01	4.400
2006-01-01	4.350
2007-01-01	3.975
2008-01-01	3.775
2009-01-01	5.275
2010-01-01	5.800
2011-01-01	5.225
2012-01-01	5.200
2013-01-01	5.100
2014-01-01	5.425
2015-01-01	5.325
2016-01-01	5.300
2017-01-01	5.075