Bi-annual	US dollars
1987-06-30	16
1987-12-31	11
1988-06-30	10
1988-12-31	16
1989-06-30	12
1989-12-31	13
1990-06-30	9
1990-12-31	19
1991-06-30	5
1991-12-31	6
1992-06-30	21
1992-12-31	18
1993-06-30	42
1993-12-31	25
1994-06-30	2
1994-12-31	20
1995-06-30	17
1995-12-31	6
1996-06-30	5
1996-12-31	3
1997-06-30	5
1997-12-31	16
1998-06-30	15
1998-12-31	18
1999-06-30	2