Bi-annual	US dollars
1987-06-30	8
1987-12-31	8
1988-06-30	7
1988-12-31	11
1989-06-30	8
1989-12-31	6
1990-06-30	7
1990-12-31	8
1991-06-30	10
1991-12-31	7
1992-06-30	11
1992-12-31	8
1993-06-30	75
1993-12-31	10
1994-06-30	17
1994-12-31	28
1995-06-30	10
1995-12-31	16
1996-06-30	5
1996-12-31	58
1997-06-30	-12
1997-12-31	87
1998-06-30	0
1998-12-31	5
1999-06-30	0