Quarter Billions of US Dollars 1996-01-01 0.00240 1996-04-01 0.00711 1996-07-01 0.00250 1996-10-01 0.00732 1997-01-01 0.00050 1997-04-01 0.00861 1997-07-01 0.00861 1997-10-01 0.00198 1998-01-01 0.00081 1998-04-01 0.00083 1998-07-01 0.00087 1998-10-01 0.00055 1999-01-01 0.00055 1999-04-01 0.00055 2001-07-01 0.11500 2001-10-01 0.11500 2002-01-01 0.11500 2002-04-01 0.11500 2005-01-01 0.38892 2005-04-01 0.36276 2005-07-01 0.36126 2005-10-01 0.35391 2009-10-01 0.15000 2010-01-01 0.15000 2010-04-01 0.15000 2010-07-01 0.15000