Year	Z-score
1996-01-01	16.814800000000000
1997-01-01	21.572000000000000
1998-01-01	20.972800000000000
1999-01-01	23.294900000000000
2000-01-01	24.244800000000000
2001-01-01	23.285100000000000
2002-01-01	22.523000000000003
2003-01-01	23.505700000000000
2004-01-01	24.411800000000000
2005-01-01	24.450000000000000
2006-01-01	20.913500000000000
2007-01-01	20.553400000000000
2008-01-01	20.878800000000000
2009-01-01	29.911300000000000
2010-01-01	33.442700000000000
2011-01-01	29.848100000000000
2012-01-01	24.715600000000000
2013-01-01	22.313700000000000
2014-01-01	24.207800000000000
2015-01-01	29.843600000000000
2016-01-01	35.132800000000000