Year	Z-score
1996-01-01	6.4967300000000000
1997-01-01	6.2030199999999995
1998-01-01	4.3454400000000000
1999-01-01	1.8252200000000000
2000-01-01	2.2426700000000000
2001-01-01	3.9853600000000000
2002-01-01	4.1952700000000000
2003-01-01	4.7868200000000000
2004-01-01	5.4704200000000000
2005-01-01	5.4544000000000000
2006-01-01	5.3084100000000000
2007-01-01	4.6847300000000000
2008-01-01	4.9284400000000000
2009-01-01	5.6762200000000000
2010-01-01	5.4647300000000000
2011-01-01	5.5622700000000000
2012-01-01	5.6129900000000000
2013-01-01	5.6962800000000010
2014-01-01	6.1385700000000000
2015-01-01	7.2883900000000000
2016-01-01	7.6960700000000000