Bi-annual	US dollars
1987-06-30	90
1987-12-31	77
1988-06-30	188
1988-12-31	240
1989-06-30	209
1989-12-31	242
1990-06-30	223
1990-12-31	183
1991-06-30	96
1991-12-31	47
1992-06-30	69
1992-12-31	32
1993-06-30	14
1993-12-31	18
1994-06-30	22
1994-12-31	3
1995-06-30	29
1995-12-31	3
1996-06-30	12
1996-12-31	27
1997-06-30	43
1997-12-31	15
1998-06-30	15
1998-12-31	3
1999-06-30	2