Year	Z-score
1996-01-01	9.1325300000000010
1997-01-01	9.0245199999999990
1998-01-01	8.1215500000000000
1999-01-01	7.8530000000000000
2000-01-01	9.0380899999999990
2001-01-01	8.3301100000000010
2002-01-01	8.8380800000000000
2003-01-01	8.7829600000000010
2004-01-01	7.9543500000000000
2005-01-01	7.6214100000000010
2006-01-01	6.3224900000000000
2007-01-01	5.3426700000000000
2008-01-01	5.7125699999999995
2009-01-01	6.5244300000000010
2010-01-01	7.5249500000000000
2011-01-01	8.3866300000000000
2012-01-01	8.9312800000000010
2013-01-01	9.6529400000000000
2014-01-01	9.3359000000000000
2015-01-01	8.0954600000000010
2016-01-01	8.4004200000000000