Year	Z-score
1996-01-01	6.390110000000000
1997-01-01	9.949290000000000
1998-01-01	10.493100000000000
1999-01-01	9.721310000000000
2000-01-01	10.055500000000000
2001-01-01	8.779140000000000
2002-01-01	8.594600000000000
2003-01-01	10.588700000000000
2004-01-01	9.857680000000000
2005-01-01	10.651900000000000
2006-01-01	9.668420000000000
2007-01-01	9.182260000000001
2008-01-01	8.968570000000000
2009-01-01	8.612990000000000
2010-01-01	8.935810000000000
2011-01-01	8.934389999999999
2012-01-01	9.138060000000001
2013-01-01	11.129100000000000
2014-01-01	8.962690000000000
2015-01-01	8.978570000000000
2016-01-01	8.360760000000000