Year	Z-score
1996-01-01	7.419050000000000
1997-01-01	7.319850000000000
1998-01-01	8.803690000000000
1999-01-01	8.586810000000000
2000-01-01	8.364390000000000
2001-01-01	9.610460000000000
2002-01-01	11.178100000000000
2003-01-01	10.103000000000000
2004-01-01	8.624419999999999
2005-01-01	7.562939999999999
2006-01-01	8.751000000000000
2007-01-01	10.542100000000000
2008-01-01	5.139220000000000
2009-01-01	9.333219999999999
2010-01-01	11.968000000000000
2011-01-01	11.007400000000000
2012-01-01	13.748900000000000
2013-01-01	15.519800000000000
2014-01-01	15.735000000000000
2015-01-01	16.422000000000000
2016-01-01	17.454900000000000