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	118
1994-06-30	130
1994-12-31	269
1995-06-30	247
1995-12-31	209
1996-06-30	182
1996-12-31	134
1997-06-30	366
1997-12-31	232
1998-06-30	549
1998-12-31	221
1999-06-30	243