Year	Z-score
1996-01-01	23.7519
1997-01-01	28.4469
1998-01-01	29.5322
1999-01-01	28.4582
2000-01-01	28.5236
2001-01-01	29.8125
2002-01-01	31.8423
2003-01-01	33.5761
2004-01-01	36.8712
2005-01-01	44.2293
2006-01-01	60.4367
2007-01-01	58.8240
2008-01-01	56.1799
2009-01-01	55.1223
2010-01-01	53.8463
2011-01-01	54.0759
2012-01-01	54.7289
2013-01-01	55.7996
2014-01-01	50.5241
2015-01-01	48.9985
2016-01-01	50.6127