Year	Percent
2000-01-01	57.325
2001-01-01	53.775
2002-01-01	49.275
2003-01-01	49.075
2004-01-01	45.000
2005-01-01	42.350
2006-01-01	39.400
2007-01-01	38.775
2008-01-01	37.575
2009-01-01	34.025
2010-01-01	35.750
2011-01-01	36.425
2012-01-01	35.050
2013-01-01	33.525
2014-01-01	33.475
2015-01-01	30.550
2016-01-01	28.600
2017-01-01	27.625