Bi-annual	US dollars
1987-06-30	192
1987-12-31	192
1988-06-30	169
1988-12-31	136
1989-06-30	14
1989-12-31	0
1990-06-30	2
1990-12-31	0
1991-06-30	3
1991-12-31	17
1992-06-30	2
1992-12-31	24
1993-06-30	35
1993-12-31	10
1994-06-30	0
1994-12-31	0
1995-06-30	3
1995-12-31	8
1996-06-30	12
1996-12-31	0
1997-06-30	2
1997-12-31	0
1998-06-30	2
1998-12-31	0
1999-06-30	0