Quarter	US dollars
1986-12-31	-503
1987-03-31	317
1987-06-30	-1311
1987-09-30	3778
1987-12-31	2997
1988-03-31	-2699
1988-06-30	1742
1988-09-30	3614
1988-12-31	1692
1989-03-31	9575
1989-06-30	3229
1989-09-30	-2393
1989-12-31	136
1990-03-31	11840
1990-06-30	1054
1990-09-30	1067
1990-12-31	1275
1991-03-31	4550
1991-06-30	-765
1991-09-30	-16
1991-12-31	-8635
1992-03-31	-1517
1992-06-30	-1129
1992-09-30	23336
1992-12-31	24910
1993-03-31	4617
1993-06-30	1153
1993-09-30	802
1993-12-31	11483
1994-03-31	-2004
1994-06-30	6
1994-09-30	-737
1994-12-31	13995
1995-03-31	113
1995-06-30	6188
1995-09-30	-258
1995-12-31	12414
1996-03-31	-1071
1996-06-30	6435
1996-09-30	3170
1996-12-31	-6477
1997-03-31	15602
1997-06-30	-810
1997-09-30	8405
1997-12-31	20875
1998-03-31	16439
1998-06-30	5004
1998-09-30	11771
1998-12-31	-43746