Bi-annual	US dollars
1987-06-30	5
1987-12-31	6
1988-06-30	0
1988-12-31	0
1989-06-30	0
1989-12-31	0
1990-06-30	0
1990-12-31	0
1991-06-30	0
1991-12-31	0
1992-06-30	0
1992-12-31	0
1993-06-30	44
1993-12-31	72
1994-06-30	60
1994-12-31	56
1995-06-30	49
1995-12-31	47
1996-06-30	40
1996-12-31	36
1997-06-30	42
1997-12-31	502
1998-06-30	0
1998-12-31	10
1999-06-30	5