Year	Z-score
1996-01-01	0.566281
1997-01-01	1.214700
1998-01-01	6.764350
1999-01-01	6.764350
2000-01-01	4.603930
2001-01-01	5.294420
2002-01-01	5.294420
2003-01-01	6.171240
2004-01-01	7.007580
2005-01-01	5.934030
2006-01-01	5.513150
2007-01-01	5.345740
2008-01-01	5.229710
2009-01-01	5.268120
2010-01-01	5.976420
2011-01-01	9.283400
2012-01-01	7.792050
2013-01-01	5.951390
2014-01-01	5.951390
2015-01-01	6.619920
2016-01-01	6.770800