Bi-annual	US dollars
1987-06-30	6
1987-12-31	2
1988-06-30	20
1988-12-31	18
1989-06-30	22
1989-12-31	23
1990-06-30	21
1990-12-31	21
1991-06-30	19
1991-12-31	21
1992-06-30	44
1992-12-31	9
1993-06-30	9
1993-12-31	9
1994-06-30	3
1994-12-31	9
1995-06-30	2
1995-12-31	5
1996-06-30	5
1996-12-31	12
1997-06-30	2
1997-12-31	2
1998-06-30	3
1998-12-31	0
1999-06-30	9