Bi-annual	US dollars
1987-06-30	6
1987-12-31	6
1988-06-30	9
1988-12-31	9
1989-06-30	8
1989-12-31	10
1990-06-30	14
1990-12-31	10
1991-06-30	10
1991-12-31	11
1992-06-30	4
1992-12-31	6
1993-06-30	8
1993-12-31	18
1994-06-30	3
1994-12-31	6
1995-06-30	5
1995-12-31	6
1996-06-30	19
1996-12-31	14
1997-06-30	62
1997-12-31	56
1998-06-30	53
1998-12-31	50
1999-06-30	46