Quarter	US dollars
1986-12-31	572
1987-03-31	-473
1987-06-30	-108
1987-09-30	-743
1987-12-31	-1073
1988-03-31	-658
1988-06-30	-365
1988-09-30	-1695
1988-12-31	-917
1989-03-31	-307
1989-06-30	178
1989-09-30	-1152
1989-12-31	-1621
1990-03-31	-3289
1990-06-30	-2852
1990-09-30	-243
1990-12-31	919
1991-03-31	538
1991-06-30	1434
1991-09-30	-463
1991-12-31	453
1992-03-31	1106
1992-06-30	-2144
1992-09-30	52
1992-12-31	-406
1993-03-31	1027
1993-06-30	-107
1993-09-30	-769
1993-12-31	2565
1994-03-31	-1182
1994-06-30	600
1994-09-30	1363
1994-12-31	-1704
1995-03-31	-3364
1995-06-30	-380
1995-09-30	-7
1995-12-31	-284
1996-03-31	22
1996-06-30	-87
1996-09-30	2092
1996-12-31	138
1997-03-31	2904
1997-06-30	793
1997-09-30	2544
1997-12-31	-2556
1998-03-31	2762
1998-06-30	-2755
1998-09-30	-971
1998-12-31	-218