Bi-annual	US dollars
1987-06-30	27
1987-12-31	38
1988-06-30	206
1988-12-31	43
1989-06-30	64
1989-12-31	32
1990-06-30	33
1990-12-31	15
1991-06-30	16
1991-12-31	17
1992-06-30	21
1992-12-31	18
1993-06-30	9
1993-12-31	4
1994-06-30	5
1994-12-31	3
1995-06-30	24
1995-12-31	26
1996-06-30	0
1996-12-31	5
1997-06-30	3
1997-12-31	2
1998-06-30	25
1998-12-31	3
1999-06-30	3