Year Percent 1996-01-01 0.8751670000000000 1997-01-01 0.8282540000000000 1998-01-01 1.0109000000000000 1999-01-01 1.0063900000000000 2000-01-01 1.2024400000000000 2001-01-01 1.2171299999999998 2002-01-01 1.3406100000000000 2003-01-01 1.0337700000000000 2004-01-01 1.9390800000000000 2005-01-01 0.8957990000000000 2006-01-01 0.2668160000000000 2007-01-01 0.8819530000000001 2008-01-01 0.6019770000000001 2009-01-01 0.8631420000000000 2010-01-01 0.7141380000000000 2011-01-01 1.0317600000000000 2012-01-01 1.1513300000000000 2013-01-01 1.3243300000000000 2014-01-01 1.4092400000000000 2015-01-01 1.7562799999999998 2016-01-01 1.5762900000000000