Bi-annual	US dollars
1987-06-30	10
1987-12-31	6
1988-06-30	5
1988-12-31	13
1989-06-30	28
1989-12-31	24
1990-06-30	24
1990-12-31	42
1991-06-30	34
1991-12-31	24
1992-06-30	11
1992-12-31	17
1993-06-30	24
1993-12-31	4
1994-06-30	3
1994-12-31	6
1995-06-30	6
1995-12-31	43
1996-06-30	0
1996-12-31	3
1997-06-30	0
1997-12-31	0
1998-06-30	28
1998-12-31	22
1999-06-30	0