Bi-annual	US dollars
1987-06-30	6
1987-12-31	8
1988-06-30	9
1988-12-31	7
1989-06-30	3
1989-12-31	6
1990-06-30	3
1990-12-31	4
1991-06-30	32
1991-12-31	37
1992-06-30	40
1992-12-31	35
1993-06-30	33
1993-12-31	33
1994-06-30	34
1994-12-31	33
1995-06-30	37
1995-12-31	5
1996-06-30	3
1996-12-31	36
1997-06-30	8
1997-12-31	5
1998-06-30	7
1998-12-31	8
1999-06-30	6