Year	Z-score
1996-01-01	10.157100000000000
1997-01-01	9.536840000000000
1998-01-01	8.592789999999999
1999-01-01	9.242569999999999
2000-01-01	8.341120000000000
2001-01-01	9.810340000000000
2002-01-01	8.151819999999999
2003-01-01	9.052400000000000
2004-01-01	11.197600000000000
2005-01-01	9.002300000000000
2006-01-01	9.477490000000000
2007-01-01	9.047450000000000
2008-01-01	8.050720000000000
2009-01-01	10.748600000000000
2010-01-01	11.196600000000000
2011-01-01	11.041100000000000
2012-01-01	11.588000000000000
2013-01-01	13.402800000000000
2014-01-01	12.579000000000000
2015-01-01	14.526300000000000
2016-01-01	14.632000000000000