Bi-annual	US dollars
1987-06-30	53
1987-12-31	58
1988-06-30	73
1988-12-31	61
1989-06-30	9
1989-12-31	8
1990-06-30	17
1990-12-31	8
1991-06-30	58
1991-12-31	71
1992-06-30	23
1992-12-31	48
1993-06-30	48
1993-12-31	18
1994-06-30	140
1994-12-31	12
1995-06-30	18
1995-12-31	16
1996-06-30	14
1996-12-31	22
1997-06-30	40
1997-12-31	51
1998-06-30	48
1998-12-31	87
1999-06-30	57