Year	Percent
2000-01-01	34.825
2001-01-01	36.400
2002-01-01	34.050
2003-01-01	32.250
2004-01-01	31.975
2005-01-01	31.825
2006-01-01	30.700
2007-01-01	29.350
2008-01-01	29.575
2009-01-01	29.375
2010-01-01	29.625
2011-01-01	28.100
2012-01-01	28.350
2013-01-01	27.900
2014-01-01	28.650
2015-01-01	26.950
2016-01-01	28.925
2017-01-01	29.650