Bi-annual	US dollars
1987-06-30	29
1987-12-31	23
1988-06-30	51
1988-12-31	14
1989-06-30	74
1989-12-31	52
1990-06-30	7
1990-12-31	6
1991-06-30	18
1991-12-31	6
1992-06-30	6
1992-12-31	2
1993-06-30	3
1993-12-31	3
1994-06-30	3
1994-12-31	2
1995-06-30	2
1995-12-31	2
1996-06-30	2
1996-12-31	3
1997-06-30	23
1997-12-31	3
1998-06-30	177
1998-12-31	290
1999-06-30	353