Year	Percent
2005-01-01	86.375
2006-01-01	87.075
2007-01-01	87.250
2008-01-01	87.075
2009-01-01	87.150
2010-01-01	87.275
2011-01-01	87.700
2012-01-01	87.700
2013-01-01	87.700
2014-01-01	87.550
2015-01-01	87.550
2016-01-01	87.375
2017-01-01	87.300