Bi-annual	US dollars
1987-06-30	352
1987-12-31	351
1988-06-30	375
1988-12-31	345
1989-06-30	302
1989-12-31	285
1990-06-30	232
1990-12-31	216
1991-06-30	175
1991-12-31	181
1992-06-30	211
1992-12-31	61
1993-06-30	57
1993-12-31	41
1994-06-30	42
1994-12-31	45
1995-06-30	37
1995-12-31	37
1996-06-30	25
1996-12-31	22
1997-06-30	7
1997-12-31	3
1998-06-30	3
1998-12-31	3
1999-06-30	3