Year	Z-score
1996-01-01	10.037700000000000
1997-01-01	8.450140000000000
1998-01-01	8.450140000000000
1999-01-01	8.509910000000001
2000-01-01	9.326030000000001
2001-01-01	8.419950000000000
2002-01-01	9.444270000000000
2003-01-01	9.114920000000000
2004-01-01	10.612700000000000
2005-01-01	10.576300000000000
2006-01-01	10.277000000000001
2007-01-01	9.356700000000000
2008-01-01	9.857450000000000
2009-01-01	8.549360000000000
2010-01-01	8.199010000000001
2011-01-01	8.013180000000000
2012-01-01	9.667210000000000
2013-01-01	8.984520000000000
2014-01-01	8.504380000000001
2015-01-01	9.971730000000000
2016-01-01	9.977300000000000