Quarter	US dollars
1986-12-31	-568
1987-03-31	456
1987-06-30	1568
1987-09-30	1275
1987-12-31	-840
1988-03-31	134
1988-06-30	1369
1988-09-30	3409
1988-12-31	-57
1989-03-31	1833
1989-06-30	875
1989-09-30	1941
1989-12-31	1231
1990-03-31	911
1990-06-30	-239
1990-09-30	2108
1990-12-31	-965
1991-03-31	-3095
1991-06-30	1297
1991-09-30	838
1991-12-31	314
1992-03-31	2109
1992-06-30	-375
1992-09-30	2281
1992-12-31	3360
1993-03-31	-282
1993-06-30	794
1993-09-30	896
1993-12-31	-1839
1994-03-31	1281
1994-06-30	-1385
1994-09-30	5219
1994-12-31	1362
1995-03-31	1725
1995-06-30	-1227
1995-09-30	4551
1995-12-31	2260
1996-03-31	3690
1996-06-30	2813
1996-09-30	3577
1996-12-31	868
1997-03-31	1262
1997-06-30	672
1997-09-30	113609
1997-12-31	17909
1998-03-31	2171
1998-06-30	5907
1998-09-30	-6049
1998-12-31	-1540