Bi-annual	US dollars
1987-06-30	69
1987-12-31	68
1988-06-30	72
1988-12-31	65
1989-06-30	68
1989-12-31	58
1990-06-30	47
1990-12-31	42
1991-06-30	32
1991-12-31	22
1992-06-30	19
1992-12-31	17
1993-06-30	9
1993-12-31	3
1994-06-30	3
1994-12-31	11
1995-06-30	10
1995-12-31	9
1996-06-30	9
1996-12-31	9
1997-06-30	0
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	0