Year Z-score 1996-01-01 1.0147100000000000 1997-01-01 1.0147100000000000 1998-01-01 1.0147100000000000 1999-01-01 1.0147100000000000 2000-01-01 -1.3082400000000000 2001-01-01 -1.3082400000000000 2002-01-01 -1.3082400000000000 2003-01-01 -1.3082400000000000 2004-01-01 -1.3082400000000000 2005-01-01 1.0707900000000000 2006-01-01 7.1386899999999995 2007-01-01 8.0702400000000000 2008-01-01 8.3718600000000000 2009-01-01 8.2235800000000000 2010-01-01 4.3054000000000000 2011-01-01 17.8655000000000000 2012-01-01 7.0555600000000010 2013-01-01 6.3060800000000010 2014-01-01 7.0104700000000000 2015-01-01 3.0774100000000000 2016-01-01 6.1576300000000000