Bi-annual	US dollars
1987-06-30	16
1987-12-31	15
1988-06-30	10
1988-12-31	18
1989-06-30	19
1989-12-31	15
1990-06-30	37
1990-12-31	17
1991-06-30	5
1991-12-31	9
1992-06-30	6
1992-12-31	5
1993-06-30	6
1993-12-31	6
1994-06-30	11
1994-12-31	6
1995-06-30	8
1995-12-31	36
1996-06-30	40
1996-12-31	17
1997-06-30	155
1997-12-31	46
1998-06-30	40
1998-12-31	37
1999-06-30	11