Year Z-score 1996-01-01 3.8406000000000000 1997-01-01 4.4396800000000000 1998-01-01 4.3074000000000000 1999-01-01 3.5330600000000000 2000-01-01 3.6726699999999997 2001-01-01 8.3514900000000000 2002-01-01 3.8635099999999998 2003-01-01 3.0353300000000000 2004-01-01 5.0276100000000000 2005-01-01 2.9786799999999998 2006-01-01 3.0315600000000000 2007-01-01 3.7506300000000000 2008-01-01 3.4856100000000000 2009-01-01 3.3409500000000000 2010-01-01 3.4845699999999997 2011-01-01 4.0155900000000000 2012-01-01 4.5817300000000000 2013-01-01 4.2726600000000000 2014-01-01 4.4268199999999990 2015-01-01 4.3213099999999995 2016-01-01 4.3293800000000005