Bi-annual	US dollars
1987-06-30	76
1987-12-31	36
1988-06-30	29
1988-12-31	27
1989-06-30	23
1989-12-31	31
1990-06-30	3
1990-12-31	0
1991-06-30	0
1991-12-31	0
1992-06-30	-6
1992-12-31	-2
1993-06-30	6
1993-12-31	19
1994-06-30	19
1994-12-31	19
1995-06-30	27
1995-12-31	37
1996-06-30	28
1996-12-31	3
1997-06-30	0
1997-12-31	2
1998-06-30	33
1998-12-31	45
1999-06-30	47