Year	Z-score
1996-01-01	12.411600000000000
1997-01-01	12.294700000000000
1998-01-01	10.601400000000000
1999-01-01	10.401900000000000
2000-01-01	10.479300000000000
2001-01-01	10.028900000000000
2002-01-01	10.354400000000000
2003-01-01	9.274830000000000
2004-01-01	9.562750000000000
2005-01-01	9.828610000000001
2006-01-01	10.093600000000000
2007-01-01	10.845300000000000
2008-01-01	11.330800000000000
2009-01-01	12.484200000000000
2010-01-01	12.960800000000000
2011-01-01	12.744800000000000
2012-01-01	13.145600000000000
2013-01-01	13.302000000000000
2014-01-01	14.847600000000000
2015-01-01	17.354400000000000
2016-01-01	17.071600000000000