Bi-annual	US dollars
1987-06-30	5
1987-12-31	11
1988-06-30	12
1988-12-31	16
1989-06-30	9
1989-12-31	10
1990-06-30	5
1990-12-31	19
1991-06-30	0
1991-12-31	0
1992-06-30	2
1992-12-31	48
1993-06-30	2
1993-12-31	3
1994-06-30	3
1994-12-31	16
1995-06-30	0
1995-12-31	0
1996-06-30	0
1996-12-31	33
1997-06-30	37
1997-12-31	18
1998-06-30	23
1998-12-31	47
1999-06-30	66