Bi-annual	US dollars
1987-06-30	35
1987-12-31	45
1988-06-30	44
1988-12-31	51
1989-06-30	23
1989-12-31	119
1990-06-30	38
1990-12-31	42
1991-06-30	88
1991-12-31	41
1992-06-30	36
1992-12-31	33
1993-06-30	21
1993-12-31	31
1994-06-30	29
1994-12-31	23
1995-06-30	40
1995-12-31	98
1996-06-30	53
1996-12-31	17
1997-06-30	18
1997-12-31	10
1998-06-30	5
1998-12-31	3
1999-06-30	6