Quarter	Billions of US Dollars
1988-10-01	0.07870
1989-10-01	0.07390
1991-04-01	0.11600
1992-04-01	0.16040
1993-04-01	-0.06649
1993-10-01	-0.08568
1994-01-01	0.07500
1994-07-01	-0.01500
1995-01-01	-0.03654
1996-01-01	-0.02346
1996-04-01	-0.09645
1997-04-01	-0.11834