Bi-annual	US dollars
1987-06-30	395
1987-12-31	406
1988-06-30	276
1988-12-31	118
1989-06-30	56
1989-12-31	0
1990-06-30	0
1990-12-31	0
1991-06-30	0
1991-12-31	2
1992-06-30	0
1992-12-31	27
1993-06-30	30
1993-12-31	44
1994-06-30	46
1994-12-31	39
1995-06-30	43
1995-12-31	59
1996-06-30	64
1996-12-31	77
1997-06-30	82
1997-12-31	90
1998-06-30	95
1998-12-31	87
1999-06-30	76