Bi-annual	US dollars
1987-06-30	108
1987-12-31	92
1988-06-30	87
1988-12-31	166
1989-06-30	130
1989-12-31	142
1990-06-30	19
1990-12-31	102
1991-06-30	6
1991-12-31	9
1992-06-30	135
1992-12-31	117
1993-06-30	116
1993-12-31	99
1994-06-30	99
1994-12-31	8
1995-06-30	13
1995-12-31	6
1996-06-30	6
1996-12-31	7
1997-06-30	3
1997-12-31	2
1998-06-30	22
1998-12-31	2
1999-06-30	6