Quarter	US dollars
1986-12-31	-457
1987-03-31	1764
1987-06-30	1273
1987-09-30	-344
1987-12-31	1249
1988-03-31	3444
1988-06-30	1733
1988-09-30	1450
1988-12-31	872
1989-03-31	2525
1989-06-30	2423
1989-09-30	1114
1989-12-31	398
1990-03-31	3552
1990-06-30	1401
1990-09-30	2668
1990-12-31	-1229
1991-03-31	1960
1991-06-30	1988
1991-09-30	765
1991-12-31	-3395
1992-03-31	2010
1992-06-30	-1844
1992-09-30	4597
1992-12-31	-777
1993-03-31	996
1993-06-30	230
1993-09-30	1319
1993-12-31	-72
1994-03-31	-1713
1994-06-30	-2021
1994-09-30	-1505
1994-12-31	-3865
1995-03-31	2381
1995-06-30	1969
1995-09-30	-4704
1995-12-31	-1116
1996-03-31	-680
1996-06-30	-1082
1996-09-30	-977
1996-12-31	-3370
1997-03-31	-1945
1997-06-30	-1654
1997-09-30	908
1997-12-31	147
1998-03-31	1283
1998-06-30	5678
1998-09-30	1414
1998-12-31	62