Year Percent 1995-01-01 0.6589260000000000 1996-01-01 0.5750200000000000 1997-01-01 0.6302490000000000 1998-01-01 0.6589440000000000 1999-01-01 0.9734500000000000 2000-01-01 1.2012600000000000 2001-01-01 1.3484100000000000 2002-01-01 1.2229600000000000 2003-01-01 1.1057600000000000 2004-01-01 0.8798540000000001 2005-01-01 0.7748830000000000 2006-01-01 1.1942000000000000 2007-01-01 0.6101330000000000 2008-01-01 0.4304350000000000 2009-01-01 0.5271460000000000 2010-01-01 0.5001850000000000 2011-01-01 0.4562250000000000 2012-01-01 0.3280090000000000 2013-01-01 0.3938980000000000