Year	Z-score
1996-01-01	8.170370000000000
1997-01-01	8.422350000000000
1998-01-01	9.452180000000000
1999-01-01	10.679100000000000
2000-01-01	9.809310000000000
2001-01-01	12.382500000000000
2002-01-01	15.196600000000000
2003-01-01	15.893500000000000
2004-01-01	14.548800000000000
2005-01-01	15.004900000000000
2006-01-01	14.243000000000000
2007-01-01	14.760600000000000
2008-01-01	14.812999999999999
2009-01-01	13.154700000000000
2010-01-01	11.568400000000000
2011-01-01	11.562800000000000
2012-01-01	11.633800000000000
2013-01-01	10.513700000000000
2014-01-01	10.421500000000000
2015-01-01	9.636569999999999
2016-01-01	10.102600000000000