Bi-annual	US dollars
1987-06-30	261
1987-12-31	287
1988-06-30	261
1988-12-31	316
1989-06-30	402
1989-12-31	332
1990-06-30	354
1990-12-31	303
1991-06-30	268
1991-12-31	116
1992-06-30	137
1992-12-31	229
1993-06-30	45
1993-12-31	111
1994-06-30	134
1994-12-31	58
1995-06-30	46
1995-12-31	9
1996-06-30	28
1996-12-31	38
1997-06-30	28
1997-12-31	63
1998-06-30	43
1998-12-31	23
1999-06-30	24