Year	Z-score
1996-01-01	15.152900000000000
1997-01-01	16.233200000000000
1998-01-01	16.345800000000000
1999-01-01	16.362400000000000
2000-01-01	20.141900000000000
2001-01-01	19.341900000000000
2002-01-01	18.851900000000000
2003-01-01	34.173500000000000
2004-01-01	30.646400000000000
2005-01-01	30.802800000000000
2006-01-01	37.867500000000000
2007-01-01	27.008600000000000
2008-01-01	19.627300000000000
2009-01-01	28.265400000000000
2010-01-01	26.938600000000000
2011-01-01	25.776999999999997
2012-01-01	29.751100000000000
2013-01-01	29.316999999999997
2014-01-01	21.730600000000000
2015-01-01	20.153500000000000
2016-01-01	20.838400000000000