Quarter	US dollars
1986-12-31	-1
1987-03-31	240
1987-06-30	2883
1987-09-30	546
1987-12-31	-838
1988-03-31	-436
1988-06-30	201
1988-09-30	-1576
1988-12-31	617
1989-03-31	-582
1989-06-30	-1429
1989-09-30	666
1989-12-31	293
1990-03-31	-46
1990-06-30	900
1990-09-30	981
1990-12-31	378
1991-03-31	-447
1991-06-30	669
1991-09-30	175
1991-12-31	-517
1992-03-31	-320
1992-06-30	166
1992-09-30	1147
1992-12-31	1947
1993-03-31	-1044
1993-06-30	-253
1993-09-30	-1070
1993-12-31	1636
1994-03-31	934
1994-06-30	-3064
1994-09-30	71
1994-12-31	2790
1995-03-31	-1022
1995-06-30	3482
1995-09-30	3153
1995-12-31	1902
1996-03-31	578
1996-06-30	127
1996-09-30	-84
1996-12-31	-1645
1997-03-31	3711
1997-06-30	-2409
1997-09-30	789
1997-12-31	-3417
1998-03-31	6962
1998-06-30	-2370
1998-09-30	-368
1998-12-31	-1539