Bi-annual	US dollars
1987-06-30	10
1987-12-31	10
1988-06-30	12
1988-12-31	10
1989-06-30	10
1989-12-31	19
1990-06-30	14
1990-12-31	12
1991-06-30	63
1991-12-31	108
1992-06-30	147
1992-12-31	129
1993-06-30	146
1993-12-31	173
1994-06-30	131
1994-12-31	166
1995-06-30	157
1995-12-31	231
1996-06-30	732
1996-12-31	757
1997-06-30	677
1997-12-31	704
1998-06-30	62
1998-12-31	102
1999-06-30	84