Year	Percent
2000-01-01	35.625
2001-01-01	36.725
2002-01-01	35.975
2003-01-01	38.025
2004-01-01	38.400
2005-01-01	39.650
2006-01-01	42.550
2007-01-01	41.200
2008-01-01	38.025
2009-01-01	42.100
2010-01-01	43.250
2011-01-01	44.375
2012-01-01	42.975
2013-01-01	42.975
2014-01-01	45.600
2015-01-01	44.100
2016-01-01	45.425
2017-01-01	46.250