Year	Percent
2000-01-01	36.750
2001-01-01	36.325
2002-01-01	36.225
2003-01-01	36.000
2004-01-01	35.425
2005-01-01	34.175
2006-01-01	32.950
2007-01-01	29.375
2008-01-01	30.125
2009-01-01	31.975
2010-01-01	33.450
2011-01-01	34.025
2012-01-01	34.300
2013-01-01	33.825
2014-01-01	34.000
2015-01-01	33.875
2016-01-01	33.375
2017-01-01	33.525