Year	Z-score
1996-01-01	5.1321000000000000
1997-01-01	4.9193300000000000
1998-01-01	4.3210400000000000
1999-01-01	4.0049400000000000
2000-01-01	4.4349000000000000
2001-01-01	5.4345800000000000
2002-01-01	4.8260800000000000
2003-01-01	2.8857800000000000
2004-01-01	4.3703600000000000
2005-01-01	5.2535000000000000
2006-01-01	5.9840800000000005
2007-01-01	5.8320200000000000
2008-01-01	5.6886600000000000
2009-01-01	6.3782800000000000
2010-01-01	6.0594600000000000
2011-01-01	6.0479100000000000
2012-01-01	6.2275400000000000
2013-01-01	6.5446000000000000
2014-01-01	7.1616100000000005
2015-01-01	7.1825700000000000
2016-01-01	6.8284400000000000