Bi-annual	US dollars
1987-06-30	77
1987-12-31	53
1988-06-30	109
1988-12-31	13
1989-06-30	96
1989-12-31	5
1990-06-30	42
1990-12-31	39
1991-06-30	23
1991-12-31	32
1992-06-30	42
1992-12-31	97
1993-06-30	35
1993-12-31	105
1994-06-30	63
1994-12-31	186
1995-06-30	81
1995-12-31	99
1996-06-30	36
1996-12-31	94
1997-06-30	100
1997-12-31	151
1998-06-30	77
1998-12-31	131
1999-06-30	60