Quarter	US dollars
1986-12-31	10093
1987-03-31	10073
1987-06-30	25740
1987-09-30	26019
1987-12-31	17970
1988-03-31	-4150
1988-06-30	17079
1988-09-30	30116
1988-12-31	-10051
1989-03-31	22783
1989-06-30	-2984
1989-09-30	11932
1989-12-31	11006
1990-03-31	15035
1990-06-30	-574
1990-09-30	36988
1990-12-31	20274
1991-03-31	-14423
1991-06-30	-33862
1991-09-30	-15287
1991-12-31	-9563
1992-03-31	-16878
1992-06-30	-2851
1992-09-30	41884
1992-12-31	13495
1993-03-31	-32510
1993-06-30	-3625
1993-09-30	5239
1993-12-31	31742
1994-03-31	7514
1994-06-30	23515
1994-09-30	33234
1994-12-31	29759
1995-03-31	12094
1995-06-30	-427
1995-09-30	12585
1995-12-31	-5446
1996-03-31	5224
1996-06-30	-3664
1996-09-30	12963
1996-12-31	29458
1997-03-31	62070
1997-06-30	16165
1997-09-30	51136
1997-12-31	124280
1998-03-31	-13457
1998-06-30	11820
1998-09-30	84053
1998-12-31	-27620