Bi-annual	US dollars
1987-06-30	11
1987-12-31	30
1988-06-30	36
1988-12-31	14
1989-06-30	19
1989-12-31	119
1990-06-30	37
1990-12-31	6
1991-06-30	10
1991-12-31	17
1992-06-30	10
1992-12-31	26
1993-06-30	45
1993-12-31	24
1994-06-30	34
1994-12-31	47
1995-06-30	35
1995-12-31	43
1996-06-30	47
1996-12-31	171
1997-06-30	40
1997-12-31	38
1998-06-30	43
1998-12-31	43
1999-06-30	30