Bi-annual	US dollars
1987-06-30	485
1987-12-31	408
1988-06-30	358
1988-12-31	336
1989-06-30	257
1989-12-31	219
1990-06-30	54
1990-12-31	48
1991-06-30	37
1991-12-31	30
1992-06-30	44
1992-12-31	9
1993-06-30	74
1993-12-31	43
1994-06-30	63
1994-12-31	113
1995-06-30	151
1995-12-31	110
1996-06-30	120
1996-12-31	111
1997-06-30	96
1997-12-31	84
1998-06-30	72
1998-12-31	102
1999-06-30	161