Bi-annual	US dollars
1987-06-30	261
1987-12-31	151
1988-06-30	193
1988-12-31	251
1989-06-30	237
1989-12-31	269
1990-06-30	239
1990-12-31	280
1991-06-30	60
1991-12-31	67
1992-06-30	76
1992-12-31	52
1993-06-30	44
1993-12-31	40
1994-06-30	42
1994-12-31	8
1995-06-30	11
1995-12-31	8
1996-06-30	9
1996-12-31	9
1997-06-30	7
1997-12-31	7
1998-06-30	12787
1998-12-31	13973
1999-06-30	12070