Year	Percent
2000-01-01	3.925
2001-01-01	3.525
2002-01-01	3.650
2003-01-01	3.400
2004-01-01	3.250
2005-01-01	3.250
2006-01-01	3.875
2007-01-01	3.850
2008-01-01	3.950
2009-01-01	5.100
2010-01-01	5.450
2011-01-01	5.900
2012-01-01	6.000
2013-01-01	5.550
2014-01-01	4.650
2015-01-01	4.125
2016-01-01	3.850
2017-01-01	3.375