Bi-annual	US dollars
1987-06-30	50
1987-12-31	9
1988-06-30	5
1988-12-31	5
1989-06-30	11
1989-12-31	8
1990-06-30	35
1990-12-31	21
1991-06-30	91
1991-12-31	99
1992-06-30	107
1992-12-31	61
1993-06-30	132
1993-12-31	86
1994-06-30	68
1994-12-31	59
1995-06-30	69
1995-12-31	108
1996-06-30	84
1996-12-31	116
1997-06-30	125
1997-12-31	474
1998-06-30	172
1998-12-31	186
1999-06-30	137