Year	Percent
2000-01-01	7.050
2001-01-01	6.675
2002-01-01	7.550
2003-01-01	8.300
2004-01-01	8.450
2005-01-01	7.900
2006-01-01	8.000
2007-01-01	7.850
2008-01-01	10.025
2009-01-01	16.800
2010-01-01	20.875
2011-01-01	22.300
2012-01-01	23.475
2013-01-01	22.675
2014-01-01	19.850
2015-01-01	16.350
2016-01-01	13.450
2017-01-01	12.600