Bi-annual	US dollars
1987-06-30	3
1987-12-31	9
1988-06-30	12
1988-12-31	34
1989-06-30	12
1989-12-31	16
1990-06-30	16
1990-12-31	6
1991-06-30	5
1991-12-31	15
1992-06-30	2
1992-12-31	3
1993-06-30	5
1993-12-31	171
1994-06-30	29
1994-12-31	14
1995-06-30	10
1995-12-31	14
1996-06-30	0
1996-12-31	0
1997-06-30	7
1997-12-31	7
1998-06-30	192
1998-12-31	87
1999-06-30	91