Bi-annual	US dollars
1987-06-30	3
1987-12-31	2
1988-06-30	0
1988-12-31	0
1989-06-30	0
1989-12-31	0
1990-06-30	0
1990-12-31	19
1991-06-30	16
1991-12-31	0
1992-06-30	0
1992-12-31	2
1993-06-30	2
1993-12-31	18
1994-06-30	42
1994-12-31	45
1995-06-30	59
1995-12-31	47
1996-06-30	30
1996-12-31	14
1997-06-30	5
1997-12-31	5
1998-06-30	3
1998-12-31	7
1999-06-30	25