Bi-annual	US dollars
1987-06-30	13
1987-12-31	13
1988-06-30	17
1988-12-31	24
1989-06-30	11
1989-12-31	15
1990-06-30	16
1990-12-31	10
1991-06-30	10
1991-12-31	9
1992-06-30	2
1992-12-31	5
1993-06-30	9
1993-12-31	4
1994-06-30	0
1994-12-31	3
1995-06-30	3
1995-12-31	2
1996-06-30	33
1996-12-31	21
1997-06-30	62
1997-12-31	25
1998-06-30	18
1998-12-31	0
1999-06-30	44