Year	Percent
2000-01-01	6.800
2001-01-01	7.375
2002-01-01	9.150
2003-01-01	9.750
2004-01-01	9.250
2005-01-01	9.100
2006-01-01	8.925
2007-01-01	10.250
2008-01-01	16.550
2009-01-01	31.600
2010-01-01	34.775
2011-01-01	36.125
2012-01-01	37.425
2013-01-01	30.325
2014-01-01	26.625
2015-01-01	23.575
2016-01-01	19.675
2017-01-01	16.000