Year	Z-score
1996-01-01	5.1122800000000000
1997-01-01	7.0320399999999990
1998-01-01	6.8660399999999990
1999-01-01	6.7219600000000000
2000-01-01	5.7323200000000000
2001-01-01	3.7456699999999996
2002-01-01	1.1305100000000001
2003-01-01	1.8003700000000000
2004-01-01	4.0933500000000000
2005-01-01	4.3582600000000000
2006-01-01	5.2737200000000000
2007-01-01	6.6930200000000000
2008-01-01	5.2646600000000000
2009-01-01	5.8111800000000000
2010-01-01	6.1117099999999995
2011-01-01	6.1993300000000010
2012-01-01	6.3079500000000000
2013-01-01	6.0648900000000000
2014-01-01	5.5739199999999990
2015-01-01	5.6733500000000000
2016-01-01	5.3163100000000000