Year	Index 2010=1
1998-01-01	0.505946865473825
1999-01-01	0.592845836337433
2000-01-01	0.615091352937591
2001-01-01	0.665662793322514
2002-01-01	0.739642798816036
2003-01-01	0.785426282565938
2004-01-01	0.794855377449926
2005-01-01	0.840821531369495
2006-01-01	0.855177588399407
2007-01-01	0.882467870612058
2008-01-01	0.992677702562113
2009-01-01	0.950092025579388
2010-01-01	1.000000000000000