Bi-annual	US dollars
1987-06-30	19
1987-12-31	23
1988-06-30	27
1988-12-31	51
1989-06-30	37
1989-12-31	18
1990-06-30	9
1990-12-31	21
1991-06-30	8
1991-12-31	11
1992-06-30	30
1992-12-31	38
1993-06-30	68
1993-12-31	72
1994-06-30	94
1994-12-31	99
1995-06-30	116
1995-12-31	129
1996-06-30	99
1996-12-31	98
1997-06-30	110
1997-12-31	110
1998-06-30	127
1998-12-31	90
1999-06-30	106