Year	Percent
2000-01-01	67.6000
2001-01-01	70.2000
2002-01-01	70.5000
2003-01-01	75.3000
2004-01-01	75.7000
2005-01-01	75.4000
2006-01-01	52.0000
2007-01-01	53.8000
2008-01-01	51.5000
2009-01-01	53.1000
2010-01-01	54.8658
2011-01-01	54.0000
2012-01-01	56.0900
2013-01-01	55.8000
2014-01-01	58.1000
2015-01-01	57.9000