Year	Index
1986-01-01	12.571600000000000
1987-01-01	15.312400000000000
1988-01-01	25.369500000000000
1989-01-01	15.150700000000000
1990-01-01	12.611700000000000
1991-01-01	13.540999999999999
1992-01-01	12.914900000000000
1993-01-01	13.199900000000000
1994-01-01	10.359200000000000
1995-01-01	10.528500000000000
1996-01-01	8.325080000000000
1997-01-01	9.203240000000000
1998-01-01	14.101600000000000
1999-01-01	18.486200000000000
2000-01-01	17.054700000000000
2001-01-01	17.343700000000000
2002-01-01	20.868600000000000
2003-01-01	24.889000000000000
2004-01-01	15.040900000000000
2005-01-01	9.216630000000000
2006-01-01	10.488500000000000
2007-01-01	13.442300000000000
2008-01-01	22.226200000000000
2009-01-01	33.623800000000000
2010-01-01	22.776300000000000
2011-01-01	17.695100000000000
2012-01-01	19.473800000000000
2013-01-01	14.069500000000000
2014-01-01	11.242400000000000
2015-01-01	12.601800000000000
2016-01-01	17.409600000000000
2017-01-01	13.395900000000000