Bi-annual	US dollars
1987-06-30	27
1987-12-31	83
1988-06-30	72
1988-12-31	92
1989-06-30	68
1989-12-31	35
1990-06-30	40
1990-12-31	143
1991-06-30	41
1991-12-31	71
1992-06-30	78
1992-12-31	6
1993-06-30	9
1993-12-31	0
1994-06-30	83
1994-12-31	13
1995-06-30	46
1995-12-31	36
1996-06-30	82
1996-12-31	99
1997-06-30	83
1997-12-31	122
1998-06-30	158
1998-12-31	38
1999-06-30	46