Year	Index
1978-01-01	7.061560000000001
1979-01-01	9.136270000000000
1980-01-01	16.176200000000000
1981-01-01	16.286900000000000
1982-01-01	16.383700000000000
1983-01-01	16.270400000000000
1984-01-01	11.493400000000000
1985-01-01	9.676470000000000
1986-01-01	9.076310000000001
1987-01-01	11.813600000000000
1988-01-01	21.307300000000000
1989-01-01	11.430600000000000
1990-01-01	9.024250000000000
1991-01-01	9.157380000000000
1992-01-01	8.138460000000000
1993-01-01	7.822139999999999
1994-01-01	9.697200000000000
1995-01-01	9.576290000000000
1996-01-01	8.234230000000000
1997-01-01	9.839010000000000
1998-01-01	15.085200000000000
1999-01-01	18.965100000000000
2000-01-01	19.927400000000000
2001-01-01	24.753000000000000
2002-01-01	18.252900000000000
2003-01-01	15.357300000000000
2004-01-01	11.329700000000000
2005-01-01	10.635900000000000
2006-01-01	11.733300000000000
2007-01-01	13.263800000000000
2008-01-01	19.899000000000000
2009-01-01	37.534200000000000
2010-01-01	24.638600000000000
2011-01-01	14.264300000000000
2012-01-01	17.017800000000000
2013-01-01	12.348600000000000
2014-01-01	9.525620000000000
2015-01-01	11.481700000000000
2016-01-01	14.970100000000000
2017-01-01	10.793900000000000