Bi-annual	US dollars
1987-06-30	0
1987-12-31	6
1988-06-30	5
1988-12-31	5
1989-06-30	6
1989-12-31	5
1990-06-30	131
1990-12-31	15
1991-06-30	6
1991-12-31	49
1992-06-30	25
1992-12-31	21
1993-06-30	23
1993-12-31	22
1994-06-30	5
1994-12-31	25
1995-06-30	24
1995-12-31	11
1996-06-30	11
1996-12-31	15
1997-06-30	22
1997-12-31	23
1998-06-30	18
1998-12-31	20
1999-06-30	19