Year	Percent
2003-01-01	20.600
2004-01-01	22.200
2005-01-01	24.900
2006-01-01	27.800
2007-01-01	28.600
2008-01-01	29.300
2009-01-01	29.375
2010-01-01	31.250
2011-01-01	31.325
2012-01-01	34.325
2013-01-01	32.400
2014-01-01	35.025
2015-01-01	33.700
2016-01-01	32.450
2017-01-01	33.850