Year	Index
1984-01-01	19.555900000000000
1985-01-01	17.344400000000000
1986-01-01	15.569700000000000
1987-01-01	19.564500000000000
1988-01-01	33.149900000000000
1989-01-01	20.057200000000000
1990-01-01	16.297400000000000
1991-01-01	17.704300000000000
1992-01-01	13.017999999999999
1993-01-01	11.850999999999999
1994-01-01	12.735600000000000
1995-01-01	11.735999999999999
1996-01-01	10.322600000000000
1997-01-01	15.870999999999999
1998-01-01	24.338400000000000
1999-01-01	27.639600000000000
2000-01-01	20.701900000000000
2001-01-01	19.900600000000000
2002-01-01	29.175100000000000
2003-01-01	39.571600000000000
2004-01-01	25.657700000000000
2005-01-01	13.076400000000000
2006-01-01	11.960100000000000
2007-01-01	14.043500000000000
2008-01-01	23.001800000000000
2009-01-01	39.985500000000000
2010-01-01	27.356200000000000
2011-01-01	19.632900000000000
2012-01-01	21.866100000000000
2013-01-01	15.990500000000000
2014-01-01	12.718900000000000
2015-01-01	16.426900000000000
2016-01-01	22.125999999999998
2017-01-01	15.553600000000000