Bi-annual	US dollars
1987-06-30	277
1987-12-31	47
1988-06-30	32
1988-12-31	27
1989-06-30	31
1989-12-31	39
1990-06-30	37
1990-12-31	42
1991-06-30	16
1991-12-31	26
1992-06-30	15
1992-12-31	17
1993-06-30	35
1993-12-31	27
1994-06-30	350
1994-12-31	297
1995-06-30	121
1995-12-31	336
1996-06-30	263
1996-12-31	394
1997-06-30	215
1997-12-31	220
1998-06-30	197
1998-12-31	58
1999-06-30	131