Bi-annual	US dollars
1987-06-30	0
1987-12-31	0
1988-06-30	0
1988-12-31	51
1989-06-30	0
1989-12-31	0
1990-06-30	0
1990-12-31	0
1991-06-30	0
1991-12-31	2
1992-06-30	93
1992-12-31	27
1993-06-30	23
1993-12-31	35
1994-06-30	63
1994-12-31	64
1995-06-30	5
1995-12-31	11
1996-06-30	3
1996-12-31	3
1997-06-30	3
1997-12-31	3
1998-06-30	10
1998-12-31	12
1999-06-30	8