Bi-annual	US dollars
1987-06-30	45
1987-12-31	19
1988-06-30	26
1988-12-31	43
1989-06-30	14
1989-12-31	16
1990-06-30	2
1990-12-31	4
1991-06-30	15
1991-12-31	6
1992-06-30	8
1992-12-31	8
1993-06-30	11
1993-12-31	4
1994-06-30	11
1994-12-31	14
1995-06-30	10
1995-12-31	12
1996-06-30	22
1996-12-31	21
1997-06-30	7
1997-12-31	7
1998-06-30	25
1998-12-31	25
1999-06-30	27