Bi-annual	US dollars
1987-06-30	305
1987-12-31	302
1988-06-30	341
1988-12-31	400
1989-06-30	315
1989-12-31	343
1990-06-30	392
1990-12-31	320
1991-06-30	334
1991-12-31	390
1992-06-30	386
1992-12-31	253
1993-06-30	221
1993-12-31	33
1994-06-30	63
1994-12-31	44
1995-06-30	30
1995-12-31	60
1996-06-30	57
1996-12-31	72
1997-06-30	32
1997-12-31	38
1998-06-30	12
1998-12-31	12
1999-06-30	9