Year	Percent
2000-01-01	61.025
2001-01-01	59.825
2002-01-01	56.725
2003-01-01	54.500
2004-01-01	53.125
2005-01-01	51.900
2006-01-01	50.425
2007-01-01	47.250
2008-01-01	45.250
2009-01-01	43.150
2010-01-01	44.100
2011-01-01	42.100
2012-01-01	39.175
2013-01-01	36.525
2014-01-01	35.125
2015-01-01	32.900
2016-01-01	31.625
2017-01-01	30.475