Year	Index 2010=1
1998-01-01	0.724149086455157
1999-01-01	0.741529470439217
2000-01-01	0.757515916793081
2001-01-01	0.805407895516519
2002-01-01	0.852880344290507
2003-01-01	0.892492836752822
2004-01-01	0.902146897802061
2005-01-01	0.895496497675860
2006-01-01	0.896724551100547
2007-01-01	0.922222264345793
2008-01-01	0.964224917867802
2009-01-01	0.993522056817324
2010-01-01	1.000000000000000