Year	Z-score
1996-01-01	12.462800000000000
1997-01-01	12.734800000000000
1998-01-01	12.067800000000000
1999-01-01	12.171500000000000
2000-01-01	12.258100000000000
2001-01-01	12.686900000000000
2002-01-01	14.464300000000000
2003-01-01	14.975999999999999
2004-01-01	12.976200000000000
2005-01-01	9.275689999999999
2006-01-01	16.579400000000000
2007-01-01	14.333700000000000
2008-01-01	14.715200000000000
2009-01-01	13.933100000000000
2010-01-01	14.151000000000000
2011-01-01	15.090600000000000
2012-01-01	16.466700000000000
2013-01-01	13.270999999999999
2014-01-01	12.903300000000000
2015-01-01	12.959800000000000
2016-01-01	13.229800000000000