Bi-annual	US dollars
1987-06-30	11
1987-12-31	19
1988-06-30	10
1988-12-31	16
1989-06-30	17
1989-12-31	16
1990-06-30	10
1990-12-31	4
1991-06-30	28
1991-12-31	21
1992-06-30	13
1992-12-31	3
1993-06-30	2
1993-12-31	0
1994-06-30	0
1994-12-31	28
1995-06-30	38
1995-12-31	23
1996-06-30	12
1996-12-31	163
1997-06-30	105
1997-12-31	104
1998-06-30	103
1998-12-31	5
1999-06-30	0