Bi-annual	US dollars
1987-06-30	69
1987-12-31	108
1988-06-30	3
1988-12-31	89
1989-06-30	127
1989-12-31	94
1990-06-30	44
1990-12-31	48
1991-06-30	97
1991-12-31	67
1992-06-30	48
1992-12-31	103
1993-06-30	65
1993-12-31	80
1994-06-30	45
1994-12-31	80
1995-06-30	76
1995-12-31	101
1996-06-30	101
1996-12-31	101
1997-06-30	8
1997-12-31	21
1998-06-30	187
1998-12-31	158
1999-06-30	101