Bi-annual	US dollars
1987-06-30	0
1987-12-31	0
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	0
1993-12-31	101
1994-06-30	59
1994-12-31	5
1995-06-30	10
1995-12-31	0
1996-06-30	3
1996-12-31	22
1997-06-30	18
1997-12-31	46
1998-06-30	77
1998-12-31	68
1999-06-30	52