Bi-annual	US dollars
1987-06-30	39
1987-12-31	2
1988-06-30	2
1988-12-31	2
1989-06-30	0
1989-12-31	0
1990-06-30	0
1990-12-31	25
1991-06-30	21
1991-12-31	0
1992-06-30	19
1992-12-31	0
1993-06-30	0
1993-12-31	0
1994-06-30	2
1994-12-31	51
1995-06-30	33
1995-12-31	104
1996-06-30	59
1996-12-31	89
1997-06-30	60
1997-12-31	3
1998-06-30	22
1998-12-31	23
1999-06-30	8