Year	Z-score
1996-01-01	9.149220000000000
1997-01-01	10.113800000000000
1998-01-01	12.923400000000000
1999-01-01	16.204400000000000
2000-01-01	7.770500000000000
2001-01-01	10.296000000000000
2002-01-01	10.821700000000000
2003-01-01	10.300500000000000
2004-01-01	10.127600000000000
2005-01-01	8.937200000000000
2006-01-01	10.296900000000000
2007-01-01	11.275100000000000
2008-01-01	10.414900000000000
2009-01-01	8.260190000000000
2010-01-01	9.218990000000000
2011-01-01	8.595130000000001
2012-01-01	10.733700000000000
2013-01-01	9.030160000000000
2014-01-01	6.870970000000000
2015-01-01	7.615000000000000
2016-01-01	7.524539999999999