Bi-annual	US dollars
1987-06-30	16
1987-12-31	19
1988-06-30	19
1988-12-31	18
1989-06-30	16
1989-12-31	16
1990-06-30	42
1990-12-31	39
1991-06-30	63
1991-12-31	71
1992-06-30	67
1992-12-31	102
1993-06-30	26
1993-12-31	27
1994-06-30	34
1994-12-31	2
1995-06-30	2
1995-12-31	0
1996-06-30	0
1996-12-31	2
1997-06-30	0
1997-12-31	0
1998-06-30	0
1998-12-31	-2
1999-06-30	0