Year	Index
1986-01-01	47.4
1990-01-01	43.6
1994-01-01	43
1998-01-01	44.1
2005-01-01	43.6
2006-01-01	44.8
2009-01-01	42.1
2013-01-01	37.4
2014-01-01	38.8