Year	Percent
2005-01-01	46.225
2006-01-01	45.475
2007-01-01	44.450
2008-01-01	43.625
2009-01-01	42.650
2010-01-01	41.900
2011-01-01	41.225
2012-01-01	39.325
2013-01-01	37.625
2014-01-01	36.225
2015-01-01	34.800
2016-01-01	33.100
2017-01-01	31.925