Quarter Billions of US Dollars 1996-10-01 0 1997-01-01 0 1997-04-01 0 1997-07-01 0 1997-10-01 30 1998-01-01 30 1998-04-01 30 1998-07-01 30 1998-10-01 0 1999-01-01 0 1999-04-01 0 1999-07-01 0 1999-10-01 0 2000-01-01 0 2000-04-01 0 2000-07-01 0 2000-10-01 0 2001-01-01 0 2001-04-01 75 2001-07-01 75 2001-10-01 75 2002-01-01 75