Bi-annual	US dollars
1987-06-30	53
1987-12-31	42
1988-06-30	44
1988-12-31	36
1989-06-30	113
1989-12-31	85
1990-06-30	103
1990-12-31	147
1991-06-30	125
1991-12-31	131
1992-06-30	152
1992-12-31	907
1993-06-30	1190
1993-12-31	733
1994-06-30	478
1994-12-31	912
1995-06-30	875
1995-12-31	836
1996-06-30	1201
1996-12-31	447
1997-06-30	411
1997-12-31	403
1998-06-30	402
1998-12-31	532
1999-06-30	230