Quarter	US dollars
1986-12-31	12954
1987-03-31	8031
1987-06-30	24196
1987-09-30	20756
1987-12-31	3623
1988-03-31	7916
1988-06-30	16810
1988-09-30	26553
1988-12-31	-5641
1989-03-31	40160
1989-06-30	-1167
1989-09-30	6094
1989-12-31	12249
1990-03-31	335
1990-06-30	-13344
1990-09-30	29096
1990-12-31	45431
1991-03-31	-24554
1991-06-30	-52648
1991-09-30	6488
1991-12-31	13877
1992-03-31	-30731
1992-06-30	-11705
1992-09-30	47683
1992-12-31	86691
1993-03-31	-3700
1993-06-30	-8403
1993-09-30	-7285
1993-12-31	44657
1994-03-31	-22058
1994-06-30	968
1994-09-30	30895
1994-12-31	39333
1995-03-31	32575
1995-06-30	1651
1995-09-30	17249
1995-12-31	-7960
1996-03-31	13573
1996-06-30	5307
1996-09-30	29976
1996-12-31	36695
1997-03-31	64989
1997-06-30	2947
1997-09-30	47486
1997-12-31	126561
1998-03-31	-9058
1998-06-30	25025
1998-09-30	90805
1998-12-31	-69241