Year	Percent
2000-01-01	34.175
2001-01-01	33.300
2002-01-01	32.925
2003-01-01	32.250
2004-01-01	33.325
2005-01-01	33.475
2006-01-01	31.850
2007-01-01	30.375
2008-01-01	30.100
2009-01-01	30.500
2010-01-01	30.400
2011-01-01	29.575
2012-01-01	28.225
2013-01-01	28.050
2014-01-01	26.900
2015-01-01	26.600
2016-01-01	25.925
2017-01-01	26.800