Bi-annual	US dollars
1987-06-30	32
1987-12-31	19
1988-06-30	22
1988-12-31	36
1989-06-30	57
1989-12-31	35
1990-06-30	40
1990-12-31	44
1991-06-30	8
1991-12-31	6
1992-06-30	2
1992-12-31	2
1993-06-30	0
1993-12-31	1
1994-06-30	0
1994-12-31	2
1995-06-30	0
1995-12-31	2
1996-06-30	2
1996-12-31	0
1997-06-30	0
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	0