Bi-annual	US dollars
1987-06-30	27
1987-12-31	15
1988-06-30	73
1988-12-31	103
1989-06-30	74
1989-12-31	82
1990-06-30	66
1990-12-31	91
1991-06-30	37
1991-12-31	32
1992-06-30	44
1992-12-31	17
1993-06-30	5
1993-12-31	6
1994-06-30	0
1994-12-31	0
1995-06-30	0
1995-12-31	0
1996-06-30	0
1996-12-31	0
1997-06-30	13
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	0