Bi-annual	US dollars
1987-06-30	118
1987-12-31	204
1988-06-30	96
1988-12-31	112
1989-06-30	81
1989-12-31	81
1990-06-30	72
1990-12-31	87
1991-06-30	104
1991-12-31	90
1992-06-30	59
1992-12-31	38
1993-06-30	33
1993-12-31	72
1994-06-30	52
1994-12-31	134
1995-06-30	132
1995-12-31	97
1996-06-30	89
1996-12-31	96
1997-06-30	98
1997-12-31	23
1998-06-30	45
1998-12-31	92
1999-06-30	60