Quarter	US dollars
1986-12-31	1712
1987-03-31	2130
1987-06-30	2750
1987-09-30	450
1987-12-31	1239
1988-03-31	-1727
1988-06-30	-256
1988-09-30	-597
1988-12-31	-878
1989-03-31	273
1989-06-30	-714
1989-09-30	784
1989-12-31	1260
1990-03-31	924
1990-06-30	205
1990-09-30	110
1990-12-31	604
1991-03-31	-610
1991-06-30	514
1991-09-30	566
1991-12-31	-1379
1992-03-31	-1521
1992-06-30	2550
1992-09-30	1535
1992-12-31	-2165
1993-03-31	-600
1993-06-30	-853
1993-09-30	-1754
1993-12-31	2367
1994-03-31	2168
1994-06-30	194
1994-09-30	149
1994-12-31	556
1995-03-31	-708
1995-06-30	-218
1995-09-30	3249
1995-12-31	-1971
1996-03-31	-10
1996-06-30	1353
1996-09-30	17
1996-12-31	-1784
1997-03-31	-640
1997-06-30	-234
1997-09-30	-139
1997-12-31	4427
1998-03-31	780
1998-06-30	2373
1998-09-30	-4702
1998-12-31	670