Year	Percent
2000-01-01	4.175
2001-01-01	3.475
2002-01-01	3.425
2003-01-01	3.150
2004-01-01	2.850
2005-01-01	2.725
2006-01-01	3.025
2007-01-01	3.175
2008-01-01	3.150
2009-01-01	4.575
2010-01-01	4.750
2011-01-01	5.000
2012-01-01	4.925
2013-01-01	4.825
2014-01-01	4.025
2015-01-01	3.450
2016-01-01	3.700
2017-01-01	3.550