Bi-annual	US dollars
1987-06-30	8
1987-12-31	0
1988-06-30	3
1988-12-31	2
1989-06-30	2
1989-12-31	3
1990-06-30	2
1990-12-31	0
1991-06-30	0
1991-12-31	0
1992-06-30	8
1992-12-31	3
1993-06-30	3
1993-12-31	59
1994-06-30	68
1994-12-31	81
1995-06-30	45
1995-12-31	90
1996-06-30	121
1996-12-31	106
1997-06-30	218
1997-12-31	257
1998-06-30	252
1998-12-31	190
1999-06-30	137