Year	Percent
2000-01-01	2.050
2001-01-01	1.500
2002-01-01	2.125
2003-01-01	2.575
2004-01-01	3.475
2005-01-01	4.075
2006-01-01	3.800
2007-01-01	3.600
2008-01-01	3.200
2009-01-01	3.100
2010-01-01	4.050
2011-01-01	4.675
2012-01-01	5.250
2013-01-01	6.775
2014-01-01	7.750
2015-01-01	8.050
2016-01-01	7.150
2017-01-01	5.525