Bi-annual	US dollars
1987-06-30	52
1987-12-31	49
1988-06-30	78
1988-12-31	58
1989-06-30	59
1989-12-31	84
1990-06-30	44
1990-12-31	39
1991-06-30	24
1991-12-31	6
1992-06-30	23
1992-12-31	27
1993-06-30	3
1993-12-31	35
1994-06-30	29
1994-12-31	30
1995-06-30	0
1995-12-31	0
1996-06-30	0
1996-12-31	0
1997-06-30	0
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	0