Year	Percent
2000-01-01	68.150
2001-01-01	68.000
2002-01-01	68.325
2003-01-01	68.275
2004-01-01	68.525
2005-01-01	68.800
2006-01-01	69.225
2007-01-01	68.925
2008-01-01	69.325
2009-01-01	69.475
2010-01-01	69.325
2011-01-01	69.625
2012-01-01	70.225
2013-01-01	70.875
2014-01-01	71.325
2015-01-01	71.700
2016-01-01	72.225
2017-01-01	72.900