Bi-annual	US dollars
1987-06-30	66
1987-12-31	19
1988-06-30	17
1988-12-31	20
1989-06-30	2
1989-12-31	45
1990-06-30	3
1990-12-31	4
1991-06-30	2
1991-12-31	6
1992-06-30	4
1992-12-31	6
1993-06-30	5
1993-12-31	95
1994-06-30	52
1994-12-31	293
1995-06-30	2
1995-12-31	2
1996-06-30	0
1996-12-31	176
1997-06-30	28
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	0