Herfindahl indices for all OTC foreign exchange derivatives contracts,,,,,,,,,,,,,,,,,,,,,,,,
,1998-H1,1998-H2,1999-H1,1999-H2,2000-H1,2000-H2,2001-H1,2001-H2,2002-H1,2002-H2,2003-H1,2003-H2,2004-H1,2004-H2,2005-H1,2005-H2,2006-H1,2006-H2,2007-H1,2007-H2,2008-H1,2008-H2,2009-H1,2009-H2
  FX Forwards and swaps + Currency swaps,302,333,372,413,423,423,416,471,427,434,438,429,442,448,440,464,475,481,486,497,496,529,556,570
  Total options,519,504,525,544,507,528,546,564,518,503,498,605,560,611,591,624,606,567,558,570,636,630,635,625