Bi-annual	US dollars
1987-06-30	13
1987-12-31	15
1988-06-30	12
1988-12-31	52
1989-06-30	9
1989-12-31	13
1990-06-30	9
1990-12-31	12
1991-06-30	8
1991-12-31	4
1992-06-30	15
1992-12-31	67
1993-06-30	84
1993-12-31	123
1994-06-30	88
1994-12-31	38
1995-06-30	105
1995-12-31	70
1996-06-30	92
1996-12-31	39
1997-06-30	47
1997-12-31	2
1998-06-30	22
1998-12-31	25
1999-06-30	25