Bi-annual	US dollars
1987-06-30	1022
1987-12-31	572
1988-06-30	576
1988-12-31	718
1989-06-30	338
1989-12-31	285
1990-06-30	267
1990-12-31	195
1991-06-30	131
1991-12-31	133
1992-06-30	133
1992-12-31	103
1993-06-30	63
1993-12-31	59
1994-06-30	60
1994-12-31	45
1995-06-30	49
1995-12-31	22
1996-06-30	44
1996-12-31	58
1997-06-30	40
1997-12-31	23
1998-06-30	20
1998-12-31	35
1999-06-30	32