Bi-annual	US dollars
1987-06-30	142
1987-12-31	125
1988-06-30	152
1988-12-31	83
1989-06-30	99
1989-12-31	145
1990-06-30	166
1990-12-31	243
1991-06-30	243
1991-12-31	73
1992-06-30	141
1992-12-31	195
1993-06-30	209
1993-12-31	205
1994-06-30	961
1994-12-31	712
1995-06-30	962
1995-12-31	874
1996-06-30	747
1996-12-31	683
1997-06-30	835
1997-12-31	90
1998-06-30	135
1998-12-31	95
1999-06-30	90