Bi-annual	US dollars
1987-06-30	0
1987-12-31	0
1988-06-30	0
1988-12-31	0
1989-06-30	0
1989-12-31	0
1990-06-30	0
1990-12-31	0
1991-06-30	0
1991-12-31	0
1992-06-30	0
1992-12-31	0
1993-06-30	0
1993-12-31	134
1994-06-30	179
1994-12-31	216
1995-06-30	270
1995-12-31	226
1996-06-30	188
1996-12-31	158
1997-06-30	181
1997-12-31	579
1998-06-30	675
1998-12-31	569
1999-06-30	594