Year	Percent
2003-01-01	3.650
2004-01-01	3.150
2006-01-01	2.700
2007-01-01	2.250
2008-01-01	3.300
2009-01-01	8.800
2010-01-01	8.500
2011-01-01	7.975
2012-01-01	6.450
2013-01-01	5.700
2014-01-01	5.200
2015-01-01	4.125
2016-01-01	3.100
2017-01-01	2.950