Year	Percent
2000-01-01	3.550
2001-01-01	3.125
2002-01-01	3.325
2003-01-01	3.525
2004-01-01	3.175
2005-01-01	3.225
2006-01-01	3.575
2007-01-01	4.375
2008-01-01	4.875
2009-01-01	8.400
2010-01-01	10.200
2011-01-01	11.600
2012-01-01	11.775
2013-01-01	11.275
2014-01-01	9.950
2015-01-01	8.250
2016-01-01	7.075
2017-01-01	5.425