Bi-annual	US dollars
1987-06-30	253
1987-12-31	111
1988-06-30	182
1988-12-31	291
1989-06-30	271
1989-12-31	345
1990-06-30	45
1990-12-31	12
1991-06-30	34
1991-12-31	13
1992-06-30	0
1992-12-31	2
1993-06-30	2
1993-12-31	0
1994-06-30	20
1994-12-31	0
1995-06-30	2
1995-12-31	9
1996-06-30	0
1996-12-31	0
1997-06-30	0
1997-12-31	0
1998-06-30	25
1998-12-31	0
1999-06-30	0