Bi-annual	US dollars
1987-06-30	45
1987-12-31	30
1988-06-30	29
1988-12-31	25
1989-06-30	20
1989-12-31	15
1990-06-30	10
1990-12-31	10
1991-06-30	5
1991-12-31	6
1992-06-30	2
1992-12-31	3
1993-06-30	3
1993-12-31	3
1994-06-30	6
1994-12-31	5
1995-06-30	3
1995-12-31	5
1996-06-30	6
1996-12-31	9
1997-06-30	10
1997-12-31	12
1998-06-30	10
1998-12-31	0
1999-06-30	3