Quarter	US dollars
1986-12-31	564
1987-03-31	-430
1987-06-30	584
1987-09-30	947
1987-12-31	-538
1988-03-31	945
1988-06-30	494
1988-09-30	377
1988-12-31	519
1989-03-31	597
1989-06-30	888
1989-09-30	92
1989-12-31	249
1990-03-31	-922
1990-06-30	-1468
1990-09-30	-1312
1990-12-31	-903
1991-03-31	-1240
1991-06-30	-734
1991-09-30	-590
1991-12-31	-623
1992-03-31	-623
1992-06-30	-293
1992-09-30	-403
1992-12-31	-517
1993-03-31	-317
1993-06-30	-545
1993-09-30	-340
1993-12-31	-152
1994-03-31	-649
1994-06-30	-639
1994-09-30	-164
1994-12-31	-519
1995-03-31	0
1995-06-30	12
1995-09-30	786
1995-12-31	1188
1996-03-31	656
1996-06-30	621
1996-09-30	254
1996-12-31	2163
1997-03-31	1863
1997-06-30	2643
1997-09-30	2930
1997-12-31	2164
1998-03-31	2892
1998-06-30	1904
1998-09-30	-9151
1998-12-31	-531