Year	Percent
2000-01-01	34.025
2001-01-01	32.875
2002-01-01	31.675
2003-01-01	31.300
2004-01-01	30.825
2005-01-01	30.025
2006-01-01	29.275
2007-01-01	27.750
2008-01-01	26.675
2009-01-01	25.950
2010-01-01	27.375
2011-01-01	27.125
2012-01-01	25.975
2013-01-01	25.575
2014-01-01	26.150
2015-01-01	25.325
2016-01-01	25.025
2017-01-01	24.775