Year	Index
1986-01-01	47.8
1989-01-01	50.5
1992-01-01	51.4
1996-01-01	47.4
1997-01-01	48.9
2000-01-01	52
2001-01-01	50.4
2002-01-01	50
2003-01-01	52
2004-01-01	52
2005-01-01	49.9
2006-01-01	51.8
2007-01-01	48.6
2008-01-01	47.8
2009-01-01	48.5
2010-01-01	46.9
2011-01-01	47.4
2012-01-01	45.6
2013-01-01	47
2014-01-01	44.1
2015-01-01	44.7
2016-01-01	45.3