Year	Z-score
1996-01-01	5.6629300000000000
1997-01-01	8.2123900000000000
1998-01-01	6.9860700000000000
1999-01-01	10.7923000000000000
2000-01-01	20.0102000000000000
2001-01-01	23.2574000000000000
2002-01-01	16.8542000000000000
2003-01-01	14.9572000000000000
2004-01-01	12.4566000000000000
2005-01-01	10.8027000000000000
2006-01-01	8.8483399999999990
2007-01-01	8.0724600000000010
2008-01-01	9.5334700000000000
2009-01-01	9.1210300000000010
2010-01-01	7.4093800000000005
2011-01-01	6.8056899999999990
2012-01-01	6.6994500000000000
2013-01-01	6.5424600000000000
2014-01-01	6.9787700000000000
2015-01-01	6.8923200000000000
2016-01-01	6.0324800000000005