Year	Z-score
1996-01-01	5.6950300000000000
1997-01-01	4.9688900000000000
1998-01-01	6.3064400000000000
1999-01-01	7.8054100000000000
2000-01-01	7.2215100000000000
2001-01-01	8.0953500000000000
2002-01-01	8.1448200000000000
2003-01-01	7.9639399999999990
2004-01-01	4.9980900000000000
2005-01-01	4.4548000000000000
2006-01-01	4.4797900000000000
2007-01-01	4.2502400000000000
2008-01-01	4.7621600000000000
2009-01-01	0.9949590000000000
2010-01-01	5.7188400000000000
2011-01-01	7.3592800000000000
2012-01-01	7.4237899999999994
2013-01-01	8.5487399999999990
2014-01-01	8.1253800000000000
2015-01-01	8.1901300000000000
2016-01-01	6.4590800000000000