Year	Percent
2000-01-01	4.250
2001-01-01	3.800
2002-01-01	4.125
2003-01-01	4.350
2004-01-01	4.125
2005-01-01	4.025
2006-01-01	4.225
2007-01-01	4.975
2008-01-01	5.775
2009-01-01	9.600
2010-01-01	11.525
2011-01-01	12.650
2012-01-01	12.925
2013-01-01	12.550
2014-01-01	11.000
2015-01-01	9.050
2016-01-01	7.725
2017-01-01	6.350