Year	Z-score
1996-01-01	14.789000000000001
1997-01-01	14.313900000000000
1998-01-01	17.528600000000000
1999-01-01	22.223500000000000
2000-01-01	19.454000000000000
2001-01-01	19.501100000000000
2002-01-01	20.675300000000000
2003-01-01	20.080700000000000
2004-01-01	19.379400000000000
2005-01-01	15.674100000000000
2006-01-01	18.708800000000000
2007-01-01	13.515200000000000
2008-01-01	10.189600000000000
2009-01-01	15.655400000000000
2010-01-01	16.433700000000000
2011-01-01	14.954000000000000
2012-01-01	16.724500000000000
2013-01-01	19.140400000000000
2014-01-01	16.434600000000000
2015-01-01	20.373400000000000
2016-01-01	21.239600000000000