Bi-annual	US dollars
1987-06-30	45
1987-12-31	51
1988-06-30	49
1988-12-31	51
1989-06-30	45
1989-12-31	35
1990-06-30	37
1990-12-31	25
1991-06-30	31
1991-12-31	37
1992-06-30	30
1992-12-31	24
1993-06-30	26
1993-12-31	27
1994-06-30	25
1994-12-31	28
1995-06-30	11
1995-12-31	8
1996-06-30	5
1996-12-31	22
1997-06-30	45
1997-12-31	23
1998-06-30	7
1998-12-31	10
1999-06-30	8