Bi-annual	US dollars
1987-06-30	119
1987-12-31	104
1988-06-30	75
1988-12-31	81
1989-06-30	87
1989-12-31	40
1990-06-30	5
1990-12-31	33
1991-06-30	2
1991-12-31	37
1992-06-30	29
1992-12-31	15
1993-06-30	14
1993-12-31	0
1994-06-30	3
1994-12-31	8
1995-06-30	19
1995-12-31	14
1996-06-30	2
1996-12-31	0
1997-06-30	0
1997-12-31	31
1998-06-30	0
1998-12-31	0
1999-06-30	0