Year	Percent
2005-01-01	32.400
2006-01-01	32.200
2007-01-01	30.700
2008-01-01	29.800
2009-01-01	29.800
2010-01-01	31.400
2011-01-01	30.100
2012-01-01	29.400
2013-01-01	28.375
2014-01-01	28.375
2015-01-01	26.775
2016-01-01	25.675
2017-01-01	24.950