Bi-annual	US dollars
1987-06-30	343
1987-12-31	364
1988-06-30	240
1988-12-31	105
1989-06-30	51
1989-12-31	0
1990-06-30	0
1990-12-31	0
1991-06-30	0
1991-12-31	0
1992-06-30	0
1992-12-31	2
1993-06-30	5
1993-12-31	9
1994-06-30	32
1994-12-31	8
1995-06-30	11
1995-12-31	9
1996-06-30	8
1996-12-31	7
1997-06-30	7
1997-12-31	7
1998-06-30	3
1998-12-31	22
1999-06-30	8