Year	Z-score
1996-01-01	10.3656000000000000
1997-01-01	10.1008000000000000
1998-01-01	14.5652000000000000
1999-01-01	16.8407000000000000
2000-01-01	16.7128000000000000
2001-01-01	14.8766000000000000
2002-01-01	23.5369000000000000
2003-01-01	38.0192000000000000
2004-01-01	9.3216700000000000
2005-01-01	9.7958500000000000
2006-01-01	10.6050000000000000
2007-01-01	11.6818000000000000
2008-01-01	3.5824800000000003
2009-01-01	5.9440100000000000
2010-01-01	7.4994700000000000
2011-01-01	6.9250100000000000
2012-01-01	8.1245300000000000
2013-01-01	8.6306000000000000
2014-01-01	9.3399500000000000
2015-01-01	10.7351000000000000
2016-01-01	11.3049000000000000