Bi-annual	US dollars
1987-06-30	48
1987-12-31	62
1988-06-30	73
1988-12-31	32
1989-06-30	64
1989-12-31	73
1990-06-30	77
1990-12-31	77
1991-06-30	36
1991-12-31	43
1992-06-30	36
1992-12-31	24
1993-06-30	24
1993-12-31	42
1994-06-30	26
1994-12-31	33
1995-06-30	33
1995-12-31	383
1996-06-30	33
1996-12-31	34
1997-06-30	35
1997-12-31	36
1998-06-30	36
1998-12-31	37
1999-06-30	38