Year	Percent
2005-01-01	26.225
2006-01-01	25.025
2007-01-01	24.400
2008-01-01	24.075
2009-01-01	23.700
2010-01-01	23.325
2011-01-01	22.700
2012-01-01	22.775
2013-01-01	22.350
2014-01-01	22.275
2015-01-01	22.375
2016-01-01	22.075
2017-01-01	21.725