Year	Z-score
1996-01-01	26.476200000000000
1997-01-01	27.924700000000000
1998-01-01	25.220300000000000
1999-01-01	24.338500000000000
2000-01-01	20.375999999999998
2001-01-01	19.905400000000000
2002-01-01	14.415999999999999
2003-01-01	12.978900000000000
2004-01-01	11.768600000000000
2005-01-01	12.905300000000000
2006-01-01	11.624600000000000
2007-01-01	14.320500000000000
2008-01-01	12.487000000000000
2009-01-01	12.666600000000000
2010-01-01	10.079000000000000
2011-01-01	12.644000000000000
2012-01-01	17.554600000000000
2013-01-01	18.818800000000000
2014-01-01	15.103800000000000
2015-01-01	13.087200000000000
2016-01-01	18.079600000000000