Year	Percent
2003-01-01	46.500
2004-01-01	44.200
2005-01-01	43.000
2006-01-01	41.800
2007-01-01	41.125
2008-01-01	41.275
2009-01-01	39.300
2010-01-01	39.700
2011-01-01	39.275
2012-01-01	37.275
2013-01-01	36.825
2014-01-01	35.800
2015-01-01	34.375
2016-01-01	35.300
2017-01-01	33.850