Year	Z-score
1996-01-01	16.461200000000000
1997-01-01	17.939100000000000
1998-01-01	16.501300000000000
1999-01-01	15.665200000000000
2000-01-01	14.956900000000000
2001-01-01	17.994600000000000
2002-01-01	17.072700000000000
2003-01-01	15.480700000000000
2004-01-01	16.930999999999997
2005-01-01	18.310000000000000
2006-01-01	17.958900000000000
2007-01-01	18.677000000000000
2008-01-01	16.910500000000000
2009-01-01	16.564800000000000
2010-01-01	17.370200000000000
2011-01-01	17.132100000000000
2012-01-01	16.589100000000000
2013-01-01	13.926500000000000
2014-01-01	15.656800000000000
2015-01-01	11.992000000000000
2016-01-01	9.966980000000000