Year	Z-score
1996-01-01	4.597680000000000
1997-01-01	4.280940000000000
1998-01-01	6.846780000000000
1999-01-01	6.223090000000000
2000-01-01	5.155640000000000
2001-01-01	6.087210000000000
2002-01-01	8.152810000000000
2003-01-01	8.999780000000000
2004-01-01	8.278780000000001
2005-01-01	9.200200000000000
2006-01-01	8.131639999999999
2007-01-01	9.368580000000000
2008-01-01	8.899000000000000
2009-01-01	8.641010000000001
2010-01-01	6.090610000000000
2011-01-01	9.280110000000000
2012-01-01	8.043930000000000
2013-01-01	8.653980000000000
2014-01-01	8.846470000000000
2015-01-01	3.574670000000000
2016-01-01	7.251220000000000