Year	Percent
2000-01-01	33.675
2001-01-01	33.700
2002-01-01	34.975
2003-01-01	33.350
2004-01-01	32.975
2005-01-01	32.075
2006-01-01	30.375
2007-01-01	31.050
2008-01-01	29.700
2009-01-01	29.425
2010-01-01	28.900
2011-01-01	28.525
2012-01-01	28.600
2013-01-01	28.225
2014-01-01	28.675
2015-01-01	26.975
2016-01-01	26.750
2017-01-01	24.950