Year	Index
1988-01-01	51.212200000000000
1989-01-01	27.386200000000000
1990-01-01	35.876500000000000
1991-01-01	43.420500000000000
1992-01-01	26.393900000000000
1993-01-01	26.086800000000000
1994-01-01	26.675900000000000
1995-01-01	19.343100000000000
1996-01-01	14.928200000000000
1997-01-01	21.725600000000000
1998-01-01	33.201700000000000
1999-01-01	39.121400000000000
2000-01-01	36.040100000000000
2001-01-01	32.140400000000000
2002-01-01	25.913400000000000
2003-01-01	19.387300000000000
2004-01-01	18.148300000000000
2005-01-01	14.405700000000000
2006-01-01	16.008400000000000
2007-01-01	17.614700000000000
2008-01-01	23.858500000000000
2009-01-01	37.679000000000000
2010-01-01	36.682800000000000
2011-01-01	34.558100000000000
2012-01-01	39.399700000000000
2013-01-01	37.540500000000000
2014-01-01	31.056700000000000
2015-01-01	42.413000000000004
2016-01-01	44.821000000000005
2017-01-01	26.917200000000000