Bi-annual	US dollars
1987-06-30	10
1987-12-31	23
1988-06-30	36
1988-12-31	38
1989-06-30	28
1989-12-31	34
1990-06-30	45
1990-12-31	29
1991-06-30	36
1991-12-31	13
1992-06-30	10
1992-12-31	9
1993-06-30	8
1993-12-31	6
1994-06-30	8
1994-12-31	25
1995-06-30	0
1995-12-31	19
1996-06-30	17
1996-12-31	3
1997-06-30	20
1997-12-31	15
1998-06-30	2
1998-12-31	2
1999-06-30	0