Bi-annual	US dollars
1987-06-30	15
1987-12-31	13
1988-06-30	7
1988-12-31	16
1989-06-30	25
1989-12-31	23
1990-06-30	5
1990-12-31	10
1991-06-30	6
1991-12-31	6
1992-06-30	6
1992-12-31	5
1993-06-30	5
1993-12-31	7
1994-06-30	6
1994-12-31	6
1995-06-30	11
1995-12-31	14
1996-06-30	5
1996-12-31	38
1997-06-30	27
1997-12-31	89
1998-06-30	22
1998-12-31	28
1999-06-30	36