Year	Z-score
1996-01-01	11.3908000000000000
1997-01-01	9.4452400000000000
1998-01-01	8.7108600000000000
1999-01-01	8.5244000000000000
2000-01-01	7.0530800000000005
2001-01-01	7.6081800000000000
2002-01-01	8.2339800000000000
2003-01-01	8.4550100000000010
2004-01-01	9.1049700000000000
2005-01-01	9.2131200000000000
2006-01-01	10.0470000000000000
2007-01-01	13.4676000000000000
2008-01-01	12.6443000000000000
2009-01-01	12.3139000000000000
2010-01-01	6.7786700000000000
2011-01-01	8.4037399999999990
2012-01-01	12.1102000000000000
2013-01-01	10.8522000000000000
2014-01-01	11.9521000000000000
2015-01-01	11.0997000000000000
2016-01-01	10.5607000000000000