Year	Percent
2000-01-01	3.800
2001-01-01	2.800
2002-01-01	3.125
2003-01-01	3.900
2004-01-01	4.825
2005-01-01	5.100
2006-01-01	4.350
2007-01-01	3.650
2008-01-01	3.000
2009-01-01	3.450
2010-01-01	4.525
2011-01-01	5.450
2012-01-01	6.250
2013-01-01	7.350
2014-01-01	7.800
2015-01-01	7.325
2016-01-01	6.550
2017-01-01	5.275