Year	Z-score
1996-01-01	9.1733300000000000
1997-01-01	7.4508500000000000
1998-01-01	8.2196900000000000
1999-01-01	7.9797199999999995
2000-01-01	7.6322800000000010
2001-01-01	7.0841800000000000
2002-01-01	5.9581200000000000
2003-01-01	1.5741200000000000
2004-01-01	9.4971100000000010
2005-01-01	8.9065500000000000
2006-01-01	8.9140900000000000
2007-01-01	8.6652100000000000
2008-01-01	7.3356699999999995
2009-01-01	7.3722100000000010
2010-01-01	7.9138300000000000
2011-01-01	7.8574199999999990
2012-01-01	8.8023300000000000
2013-01-01	8.5828899999999990
2014-01-01	8.6783200000000000
2015-01-01	8.5567800000000000
2016-01-01	8.4710600000000010