Bi-annual	US dollars
1987-06-30	118
1987-12-31	104
1988-06-30	87
1988-12-31	90
1989-06-30	56
1989-12-31	48
1990-06-30	37
1990-12-31	31
1991-06-30	32
1991-12-31	35
1992-06-30	19
1992-12-31	39
1993-06-30	84
1993-12-31	46
1994-06-30	94
1994-12-31	22
1995-06-30	80
1995-12-31	99
1996-06-30	70
1996-12-31	53
1997-06-30	17
1997-12-31	38
1998-06-30	47
1998-12-31	42
1999-06-30	71