Year	Percent
2005-01-01	47.900
2006-01-01	45.075
2007-01-01	42.800
2008-01-01	41.275
2009-01-01	39.050
2010-01-01	37.425
2011-01-01	35.875
2012-01-01	34.575
2013-01-01	32.550
2014-01-01	30.925
2015-01-01	30.575
2016-01-01	28.650
2017-01-01	27.400