Bi-annual	US dollars
1987-06-30	37
1987-12-31	26
1988-06-30	12
1988-12-31	7
1989-06-30	6
1989-12-31	2
1990-06-30	5
1990-12-31	2
1991-06-30	3
1991-12-31	2
1992-06-30	4
1992-12-31	6
1993-06-30	2
1993-12-31	3
1994-06-30	5
1994-12-31	16
1995-06-30	19
1995-12-31	17
1996-06-30	14
1996-12-31	33
1997-06-30	45
1997-12-31	25
1998-06-30	2
1998-12-31	8
1999-06-30	17