Bi-annual	US dollars
1987-06-30	71
1987-12-31	77
1988-06-30	87
1988-12-31	92
1989-06-30	14
1989-12-31	73
1990-06-30	26
1990-12-31	19
1991-06-30	23
1991-12-31	19
1992-06-30	13
1992-12-31	14
1993-06-30	11
1993-12-31	24
1994-06-30	14
1994-12-31	22
1995-06-30	10
1995-12-31	11
1996-06-30	17
1996-12-31	22
1997-06-30	18
1997-12-31	18
1998-06-30	18
1998-12-31	13
1999-06-30	11