Year	Z-score
1996-01-01	13.7936000000000000
1997-01-01	10.8894000000000000
1998-01-01	11.6884000000000000
1999-01-01	10.8851000000000000
2000-01-01	10.0681000000000000
2001-01-01	10.8081000000000000
2002-01-01	12.5237000000000000
2003-01-01	12.9692000000000000
2004-01-01	20.1633000000000000
2005-01-01	15.7353000000000000
2006-01-01	11.7797000000000000
2007-01-01	10.1489000000000000
2008-01-01	9.1562700000000000
2009-01-01	9.3469600000000010
2010-01-01	7.3886899999999995
2011-01-01	8.3940900000000000
2012-01-01	8.6717300000000000
2013-01-01	7.4595300000000000
2014-01-01	7.7363500000000000
2015-01-01	4.8119200000000000
2016-01-01	4.4728400000000000