Year	Percent
2003-01-01	31.000
2004-01-01	29.600
2005-01-01	32.100
2006-01-01	30.600
2007-01-01	30.625
2008-01-01	30.800
2009-01-01	34.925
2010-01-01	26.825
2011-01-01	26.350
2012-01-01	28.775
2013-01-01	29.850
2014-01-01	29.650
2015-01-01	36.200
2016-01-01	30.375
2017-01-01	32.575