Year	Percent
2001-01-01	4.850
2002-01-01	5.100
2003-01-01	5.675
2004-01-01	6.525
2005-01-01	7.475
2006-01-01	7.050
2007-01-01	6.175
2008-01-01	6.250
2009-01-01	8.375
2010-01-01	8.625
2011-01-01	7.800
2012-01-01	7.975
2013-01-01	8.075
2014-01-01	7.950
2015-01-01	7.450
2016-01-01	6.975
2017-01-01	6.725