Year	Z-score
2000-01-01	46.403000000000000
2001-01-01	45.735400000000000
2002-01-01	45.053500000000000
2003-01-01	43.531500000000000
2004-01-01	9.266130000000000
2005-01-01	10.992700000000000
2006-01-01	8.475530000000001
2007-01-01	9.476000000000000
2008-01-01	9.633010000000000
2009-01-01	9.110520000000000
2010-01-01	9.112400000000000
2011-01-01	9.648280000000000
2012-01-01	9.096410000000000
2013-01-01	7.784839999999999
2014-01-01	7.869489999999999
2015-01-01	8.472220000000000
2016-01-01	8.518120000000000