Bi-annual	US dollars
1987-06-30	92
1987-12-31	77
1988-06-30	80
1988-12-31	110
1989-06-30	68
1989-12-31	98
1990-06-30	108
1990-12-31	125
1991-06-30	83
1991-12-31	92
1992-06-30	65
1992-12-31	65
1993-06-30	41
1993-12-31	44
1994-06-30	34
1994-12-31	25
1995-06-30	17
1995-12-31	6
1996-06-30	3
1996-12-31	3
1997-06-30	2
1997-12-31	10
1998-06-30	2
1998-12-31	0
1999-06-30	0