Bi-annual	US dollars
1987-06-30	113
1987-12-31	42
1988-06-30	29
1988-12-31	29
1989-06-30	57
1989-12-31	47
1990-06-30	30
1990-12-31	44
1991-06-30	8
1991-12-31	13
1992-06-30	49
1992-12-31	48
1993-06-30	57
1993-12-31	59
1994-06-30	29
1994-12-31	53
1995-06-30	19
1995-12-31	119
1996-06-30	106
1996-12-31	344
1997-06-30	82
1997-12-31	81
1998-06-30	87
1998-12-31	77
1999-06-30	60