Year	Percent
2003-01-01	29.700
2004-01-01	26.400
2005-01-01	25.500
2006-01-01	25.000
2007-01-01	22.300
2008-01-01	27.125
2009-01-01	29.400
2010-01-01	22.650
2011-01-01	23.375
2012-01-01	24.625
2013-01-01	21.775
2014-01-01	23.000
2015-01-01	34.150
2016-01-01	31.050
2017-01-01	28.275