Year	Z-score
1996-01-01	10.062200000000000
1997-01-01	16.178200000000000
1998-01-01	19.476500000000000
1999-01-01	17.656700000000000
2000-01-01	13.555600000000000
2001-01-01	12.260700000000000
2002-01-01	20.325100000000000
2003-01-01	17.343500000000000
2004-01-01	17.886600000000000
2005-01-01	22.188000000000002
2006-01-01	15.518500000000000
2007-01-01	14.949900000000000
2008-01-01	18.582900000000000
2009-01-01	18.016900000000000
2010-01-01	15.660200000000000
2011-01-01	13.762200000000000
2012-01-01	21.403700000000000
2013-01-01	17.361600000000000
2014-01-01	11.472800000000000
2015-01-01	12.100999999999999
2016-01-01	12.674800000000000