Year	Z-score
1996-01-01	12.704800000000000
1997-01-01	11.976900000000000
1998-01-01	11.584200000000000
1999-01-01	10.926400000000000
2000-01-01	10.575700000000000
2001-01-01	10.653400000000000
2002-01-01	14.449700000000000
2003-01-01	13.700999999999999
2004-01-01	12.443900000000000
2005-01-01	12.337800000000000
2006-01-01	14.628600000000000
2007-01-01	15.523500000000000
2008-01-01	22.520300000000000
2009-01-01	20.005600000000000
2010-01-01	20.077700000000000
2011-01-01	20.324300000000000
2012-01-01	15.588800000000000
2013-01-01	14.283200000000000
2014-01-01	13.614000000000000
2015-01-01	12.656100000000000
2016-01-01	12.186800000000000