Quarter	US dollars
1986-12-31	-492
1987-03-31	-2963
1987-06-30	1773
1987-09-30	-1195
1987-12-31	833
1988-03-31	-1554
1988-06-30	3668
1988-09-30	2110
1988-12-31	1437
1989-03-31	2326
1989-06-30	3669
1989-09-30	-568
1989-12-31	-1488
1990-03-31	1321
1990-06-30	964
1990-09-30	5932
1990-12-31	5511
1991-03-31	-886
1991-06-30	3343
1991-09-30	-757
1991-12-31	-1106
1992-03-31	-2095
1992-06-30	1057
1992-09-30	-4170
1992-12-31	4752
1993-03-31	-4014
1993-06-30	-2056
1993-09-30	1859
1993-12-31	1010
1994-03-31	-892
1994-06-30	795
1994-09-30	-2559
1994-12-31	-1244
1995-03-31	3727
1995-06-30	253
1995-09-30	-4895
1995-12-31	2176
1996-03-31	5531
1996-06-30	328
1996-09-30	-4571
1996-12-31	4333
1997-03-31	-248
1997-06-30	485
1997-09-30	-1668
1997-12-31	-822
1998-03-31	935
1998-06-30	-2644
1998-09-30	7529
1998-12-31	-987