Year	Index
1996-01-01	0.14313599999999999
1997-01-01	0.17048800000000000
1998-01-01	0.28348300000000000
1999-01-01	0.40078800000000003
2000-01-01	0.41036600000000000
2001-01-01	0.46195800000000000
2002-01-01	0.50368200000000000
2003-01-01	0.57101499999999990
2004-01-01	0.60139600000000000
2005-01-01	0.61534100000000000
2006-01-01	0.53948100000000000
2007-01-01	0.49009200000000000
2008-01-01	0.46283300000000000
2009-01-01	0.53519800000000000
2010-01-01	0.57275400000000000
2011-01-01	0.57766100000000000
2012-01-01	0.58390900000000000
2013-01-01	0.59082400000000000