Bi-annual	US dollars
1987-06-30	8
1987-12-31	11
1988-06-30	0
1988-12-31	4
1989-06-30	2
1989-12-31	0
1990-06-30	35
1990-12-31	44
1991-06-30	6
1991-12-31	26
1992-06-30	36
1992-12-31	5
1993-06-30	17
1993-12-31	0
1994-06-30	0
1994-12-31	0
1995-06-30	0
1995-12-31	0
1996-06-30	0
1996-12-31	5
1997-06-30	12
1997-12-31	8
1998-06-30	12
1998-12-31	28
1999-06-30	13