Bi-annual	US dollars
1987-06-30	92
1987-12-31	94
1988-06-30	104
1988-12-31	99
1989-06-30	68
1989-12-31	61
1990-06-30	37
1990-12-31	96
1991-06-30	49
1991-12-31	32
1992-06-30	25
1992-12-31	17
1993-06-30	12
1993-12-31	3
1994-06-30	0
1994-12-31	2
1995-06-30	0
1995-12-31	0
1996-06-30	0
1996-12-31	0
1997-06-30	0
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	0