Year	Index 2010=1
1998-01-01	0.499041238781637
1999-01-01	0.549443382944259
2000-01-01	0.581742822062104
2001-01-01	0.630831961680480
2002-01-01	0.721330084856776
2003-01-01	0.751593045922266
2004-01-01	0.774108669490272
2005-01-01	0.781910815777548
2006-01-01	0.862308857890252
2007-01-01	0.881494307138280
2008-01-01	0.960376923846106
2009-01-01	0.996268796098596
2010-01-01	1.000000000000000