Year	Index
1991-01-01	45.0939
1992-01-01	31.9162
1993-01-01	37.4972
1994-01-01	32.1104
1995-01-01	29.7740
1996-01-01	25.3708
1997-01-01	18.2440
1998-01-01	20.3348
1999-01-01	23.7731
2000-01-01	16.9315
2001-01-01	14.9643
2002-01-01	12.6088
2003-01-01	11.2108
2004-01-01	14.3074
2005-01-01	14.2748
2006-01-01	21.2029
2007-01-01	24.1332
2008-01-01	31.9598
2009-01-01	42.8908
2010-01-01	28.7638
2011-01-01	25.4613
2012-01-01	27.6740
2013-01-01	16.0507
2014-01-01	16.4165
2015-01-01	13.9580