Bi-annual	US dollars
1987-06-30	281
1987-12-31	287
1988-06-30	280
1988-12-31	280
1989-06-30	256
1989-12-31	282
1990-06-30	232
1990-12-31	199
1991-06-30	128
1991-12-31	121
1992-06-30	118
1992-12-31	115
1993-06-30	104
1993-12-31	56
1994-06-30	60
1994-12-31	56
1995-06-30	41
1995-12-31	39
1996-06-30	28
1996-12-31	21
1997-06-30	8
1997-12-31	8
1998-06-30	7
1998-12-31	3
1999-06-30	3