Year	Percent
2000-01-01	27.1000
2001-01-01	27.1000
2002-01-01	27.1000
2003-01-01	27.1000
2004-01-01	27.1000
2005-01-01	27.1000
2006-01-01	27.1000
2007-01-01	27.1000
2008-01-01	27.1000
2009-01-01	27.1000
2010-01-01	27.1000
2011-01-01	27.1000
2012-01-01	20.8059
2013-01-01	19.5541
2014-01-01	18.5887
2015-01-01	19.9671
2016-01-01	19.2465