Bi-annual	US dollars
1987-06-30	29
1987-12-31	40
1988-06-30	36
1988-12-31	18
1989-06-30	25
1989-12-31	19
1990-06-30	17
1990-12-31	21
1991-06-30	3
1991-12-31	30
1992-06-30	23
1992-12-31	23
1993-06-30	23
1993-12-31	22
1994-06-30	5
1994-12-31	59
1995-06-30	14
1995-12-31	16
1996-06-30	0
1996-12-31	0
1997-06-30	10
1997-12-31	0
1998-06-30	2
1998-12-31	37
1999-06-30	36