Bi-annual	US dollars
1987-06-30	323
1987-12-31	168
1988-06-30	165
1988-12-31	114
1989-06-30	118
1989-12-31	105
1990-06-30	9
1990-12-31	48
1991-06-30	31
1991-12-31	24
1992-06-30	72
1992-12-31	39
1993-06-30	53
1993-12-31	95
1994-06-30	77
1994-12-31	89
1995-06-30	116
1995-12-31	73
1996-06-30	84
1996-12-31	68
1997-06-30	70
1997-12-31	84
1998-06-30	145
1998-12-31	108
1999-06-30	87