Quarter Billions of US Dollars 1997-01-01 0.0160 1997-04-01 0.0160 1997-07-01 0.0160 1997-10-01 0.0160 1998-01-01 0.0160 1998-04-01 0.0160 1998-07-01 0.0160 1998-10-01 0.0160 1999-01-01 0.0160 1999-04-01 0.0160 1999-07-01 0.0160 1999-10-01 0.0160 2000-01-01 0.0160 2000-04-01 0.0160 2000-07-01 0.0160 2000-10-01 0.0160 2001-01-01 0.0160 2001-04-01 0.0160 2001-07-01 0.0157 2001-10-01 0.0160 2002-01-01 0.0160 2002-04-01 0.0160 2002-07-01 0.0160 2002-10-01 0.0160 2003-01-01 0.0160 2003-04-01 0.0160 2003-07-01 0.0160 2003-10-01 0.0160 2004-01-01 0.0160 2004-04-01 0.0160 2004-07-01 0.0160 2004-10-01 0.0160