Year Percent 1995-01-01 1.0062100000000000 1996-01-01 0.8965520000000000 1997-01-01 1.1042000000000000 1998-01-01 0.8586670000000000 1999-01-01 0.8036900000000000 2000-01-01 0.8673440000000000 2001-01-01 1.1013200000000000 2002-01-01 1.9755599999999998 2003-01-01 1.7662300000000000 2004-01-01 1.5875600000000000 2005-01-01 0.7522730000000000 2006-01-01 0.6125590000000000 2007-01-01 1.1475799999999998 2008-01-01 1.1345100000000001 2009-01-01 2.5577099999999997 2010-01-01 2.4105300000000000 2011-01-01 2.7925600000000000 2012-01-01 1.1530000000000000 2013-01-01 1.4447500000000000