Year	Percent
2003-01-01	39.700
2004-01-01	38.300
2005-01-01	38.300
2006-01-01	38.700
2007-01-01	35.525
2008-01-01	38.650
2009-01-01	46.550
2010-01-01	47.650
2011-01-01	46.950
2012-01-01	47.425
2013-01-01	48.250
2014-01-01	49.800
2015-01-01	43.025
2016-01-01	46.375
2017-01-01	45.400