Bi-annual	US dollars
1987-06-30	24
1987-12-31	21
1988-06-30	22
1988-12-31	20
1989-06-30	40
1989-12-31	48
1990-06-30	5
1990-12-31	6
1991-06-30	13
1991-12-31	17
1992-06-30	15
1992-12-31	21
1993-06-30	18
1993-12-31	3
1994-06-30	40
1994-12-31	6
1995-06-30	16
1995-12-31	17
1996-06-30	6
1996-12-31	7
1997-06-30	10
1997-12-31	30
1998-06-30	5
1998-12-31	3
1999-06-30	3