Year	Z-score
1996-01-01	14.652600000000000
1997-01-01	13.477000000000000
1998-01-01	14.944000000000000
1999-01-01	15.346600000000000
2000-01-01	15.596700000000000
2001-01-01	15.770999999999999
2002-01-01	16.956500000000000
2003-01-01	19.116800000000000
2004-01-01	20.798500000000000
2005-01-01	19.927700000000000
2006-01-01	19.997300000000000
2007-01-01	19.206600000000000
2008-01-01	17.757500000000000
2009-01-01	21.191000000000000
2010-01-01	18.469800000000000
2011-01-01	17.506100000000000
2012-01-01	15.894000000000000
2013-01-01	15.833100000000000
2014-01-01	14.637100000000000
2015-01-01	14.238300000000000
2016-01-01	13.825300000000000