Year	Percent
2000-01-01	2.175
2001-01-01	2.575
2002-01-01	2.800
2003-01-01	3.025
2004-01-01	3.125
2005-01-01	3.550
2006-01-01	2.800
2007-01-01	1.925
2008-01-01	1.800
2009-01-01	2.000
2010-01-01	2.500
2011-01-01	2.500
2012-01-01	2.200
2013-01-01	2.900
2014-01-01	3.175
2015-01-01	3.800
2016-01-01	3.600
2017-01-01	3.450