Year	Percent
2000-01-01	4.400
2001-01-01	3.975
2002-01-01	4.525
2003-01-01	4.825
2004-01-01	4.625
2005-01-01	4.425
2006-01-01	4.500
2007-01-01	5.050
2008-01-01	6.900
2009-01-01	12.825
2010-01-01	14.800
2011-01-01	15.675
2012-01-01	15.775
2013-01-01	14.000
2014-01-01	12.100
2015-01-01	10.150
2016-01-01	8.575
2017-01-01	6.875