Quarter Billions of US Dollars 1996-01-01 0.002400000 1996-04-01 0.004710000 1996-07-01 0.002270000 1996-10-01 -0.002060000 1997-01-01 -0.006820000 1997-04-01 0.008109116 1997-07-01 -0.000002746 1997-10-01 -0.006630000 1998-01-01 -0.001164430 1998-04-01 0.000013190 1998-07-01 0.000045000 1998-10-01 -0.000320120 1999-07-01 -0.000550000