Year	Z-score
2000-01-01	15.974300000000000
2001-01-01	9.953510000000001
2002-01-01	12.482400000000000
2003-01-01	12.666200000000000
2004-01-01	11.455600000000000
2005-01-01	13.906500000000000
2006-01-01	14.585400000000000
2007-01-01	12.582400000000000
2008-01-01	14.262300000000000
2009-01-01	13.714700000000000
2010-01-01	14.162800000000000
2011-01-01	13.970200000000000
2012-01-01	13.401300000000000
2013-01-01	13.806400000000000
2014-01-01	12.723800000000000
2015-01-01	12.807900000000000
2016-01-01	12.229300000000000