Year	Z-score
1996-01-01	9.603850000000000
1997-01-01	9.991810000000001
1998-01-01	10.524100000000000
1999-01-01	9.317390000000000
2000-01-01	10.594400000000000
2001-01-01	10.688300000000000
2002-01-01	12.902300000000000
2003-01-01	13.743900000000000
2004-01-01	28.410700000000000
2005-01-01	14.678400000000000
2006-01-01	13.372600000000000
2007-01-01	15.433600000000000
2008-01-01	13.984400000000000
2009-01-01	14.434800000000000
2010-01-01	15.690700000000000
2011-01-01	11.585500000000000
2012-01-01	13.139600000000000
2013-01-01	10.478500000000000
2014-01-01	12.456400000000000
2015-01-01	13.807900000000000
2016-01-01	10.031100000000000