Bi-annual	US dollars
1987-06-30	3
1987-12-31	2
1988-06-30	2
1988-12-31	2
1989-06-30	2
1989-12-31	0
1990-06-30	0
1990-12-31	0
1991-06-30	2
1991-12-31	2
1992-06-30	2
1992-12-31	3
1993-06-30	9
1993-12-31	12
1994-06-30	6
1994-12-31	14
1995-06-30	25
1995-12-31	22
1996-06-30	23
1996-12-31	21
1997-06-30	30
1997-12-31	36
1998-06-30	52
1998-12-31	53
1999-06-30	49