Year	Z-score
1996-01-01	6.3680400000000010
1997-01-01	5.7599599999999995
1998-01-01	7.4191600000000010
1999-01-01	9.0954400000000000
2000-01-01	9.3726200000000000
2001-01-01	7.8414300000000000
2002-01-01	7.3515300000000000
2003-01-01	7.9151300000000000
2004-01-01	8.3505899999999990
2005-01-01	9.7685900000000000
2006-01-01	6.2720500000000000
2007-01-01	7.7740600000000000
2008-01-01	7.9111400000000000
2009-01-01	8.0419399999999990
2010-01-01	7.8137300000000005
2011-01-01	8.2243600000000000
2012-01-01	9.5128899999999990
2013-01-01	8.6861900000000000
2014-01-01	9.1289000000000000
2015-01-01	8.9479800000000010
2016-01-01	10.9969000000000000