Year	Z-score
1996-01-01	6.5444000000000000
1997-01-01	7.6769000000000000
1998-01-01	9.4531200000000000
1999-01-01	6.5152800000000010
2000-01-01	5.3820900000000000
2001-01-01	4.8940100000000000
2002-01-01	4.3897300000000000
2003-01-01	3.9946900000000003
2004-01-01	3.7089300000000005
2005-01-01	3.4763599999999997
2006-01-01	3.5734600000000000
2007-01-01	4.7307200000000000
2008-01-01	4.0517800000000000
2009-01-01	3.6214900000000000
2010-01-01	7.9791300000000005
2011-01-01	4.3516200000000000
2012-01-01	5.1181900000000000
2013-01-01	4.4328100000000000
2014-01-01	3.7463599999999997
2015-01-01	3.1682200000000003
2016-01-01	3.3672800000000005