Year	Percent
1996-01-01	30.720300000000000
1997-01-01	30.720300000000000
1998-01-01	93.700800000000000
1999-01-01	80.722900000000000
2000-01-01	87.074100000000000
2001-01-01	87.037000000000000
2002-01-01	27.609900000000000
2003-01-01	28.212300000000000
2004-01-01	22.502700000000000
2005-01-01	28.126100000000000
2006-01-01	26.314100000000000
2007-01-01	29.178300000000000
2008-01-01	28.554600000000000
2009-01-01	24.988000000000003
2010-01-01	24.593100000000000
2011-01-01	22.754900000000000
2012-01-01	28.102100000000000
2013-01-01	28.715500000000000
2014-01-01	29.311100000000000