Bi-annual	US dollars
1987-06-30	145
1987-12-31	70
1988-06-30	125
1988-12-31	175
1989-06-30	211
1989-12-31	218
1990-06-30	169
1990-12-31	230
1991-06-30	32
1991-12-31	35
1992-06-30	44
1992-12-31	15
1993-06-30	41
1993-12-31	34
1994-06-30	32
1994-12-31	3
1995-06-30	5
1995-12-31	2
1996-06-30	2
1996-12-31	2
1997-06-30	0
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	0