Year	Percent
1996-01-01	68.173400000000000
1997-01-01	54.541200000000000
1998-01-01	52.355100000000000
1999-01-01	55.717500000000000
2000-01-01	49.880300000000000
2001-01-01	99.266500000000000
2002-01-01	48.773000000000000
2003-01-01	44.332000000000000
2004-01-01	51.018800000000000
2005-01-01	48.308000000000000
2006-01-01	41.571000000000005
2007-01-01	41.464700000000000
2008-01-01	43.447100000000000
2009-01-01	44.589600000000000
2010-01-01	48.309700000000000
2011-01-01	48.113800000000000
2012-01-01	46.958000000000000
2013-01-01	53.965900000000000
2014-01-01	52.399600000000000