Year	Percent
2000-01-01	71.225
2001-01-01	71.425
2002-01-01	71.400
2003-01-01	71.525
2004-01-01	71.700
2005-01-01	71.775
2006-01-01	71.600
2007-01-01	71.450
2008-01-01	71.500
2009-01-01	69.875
2010-01-01	69.375
2011-01-01	69.300
2012-01-01	69.950
2013-01-01	70.525
2014-01-01	71.900
2015-01-01	72.725
2016-01-01	73.500
2017-01-01	74.125