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	18
1994-06-30	6
1994-12-31	69
1995-06-30	95
1995-12-31	174
1996-06-30	137
1996-12-31	356
1997-06-30	323
1997-12-31	87
1998-06-30	52
1998-12-31	8
1999-06-30	77