Year	Z-score
1996-01-01	11.754500000000000
1997-01-01	10.549500000000000
1998-01-01	10.916300000000000
1999-01-01	9.929120000000000
2000-01-01	8.381780000000001
2001-01-01	8.071360000000000
2002-01-01	10.577300000000000
2003-01-01	7.090520000000000
2004-01-01	8.017150000000000
2005-01-01	9.152090000000000
2006-01-01	11.285100000000000
2007-01-01	14.621900000000000
2008-01-01	15.345300000000000
2009-01-01	13.665900000000000
2010-01-01	14.391500000000000
2011-01-01	14.236200000000000
2012-01-01	15.234000000000002
2013-01-01	15.081500000000000
2014-01-01	14.297600000000000
2015-01-01	14.383000000000000
2016-01-01	13.096600000000000