Year	Percent
2000-01-01	46.550
2001-01-01	46.575
2002-01-01	47.500
2003-01-01	48.175
2004-01-01	48.225
2005-01-01	48.125
2006-01-01	49.250
2007-01-01	49.400
2008-01-01	48.875
2009-01-01	47.975
2010-01-01	47.450
2011-01-01	47.150
2012-01-01	46.625
2013-01-01	46.525
2014-01-01	46.025
2015-01-01	46.075
2016-01-01	45.975
2017-01-01	45.925