Bi-annual	US dollars
1987-06-30	18
1987-12-31	23
1988-06-30	17
1988-12-31	13
1989-06-30	84
1989-12-31	52
1990-06-30	3
1990-12-31	2
1991-06-30	2
1991-12-31	0
1992-06-30	0
1992-12-31	2
1993-06-30	0
1993-12-31	9
1994-06-30	5
1994-12-31	5
1995-06-30	11
1995-12-31	79
1996-06-30	2
1996-12-31	3
1997-06-30	2
1997-12-31	13
1998-06-30	15
1998-12-31	23
1999-06-30	27