Year	Index
1998-01-01	0.24055200000000000
1999-01-01	0.18979000000000001
2000-01-01	0.25163500000000000
2001-01-01	0.25359000000000000
2002-01-01	0.21700500000000003
2003-01-01	0.22270800000000000
2004-01-01	0.26518700000000000
2005-01-01	0.26051900000000000
2006-01-01	0.27984300000000000
2007-01-01	0.33767300000000000
2008-01-01	0.27529200000000000
2009-01-01	0.32920400000000000
2010-01-01	0.32186400000000000
2011-01-01	0.29666700000000000
2012-01-01	0.26217600000000000
2013-01-01	0.29922900000000000
2014-01-01	0.29327300000000000