Bi-annual	US dollars
1987-06-30	45
1987-12-31	18
1988-06-30	38
1988-12-31	226
1989-06-30	55
1989-12-31	98
1990-06-30	26
1990-12-31	33
1991-06-30	97
1991-12-31	187
1992-06-30	221
1992-12-31	165
1993-06-30	170
1993-12-31	350
1994-06-30	333
1994-12-31	311
1995-06-30	194
1995-12-31	234
1996-06-30	207
1996-12-31	236
1997-06-30	289
1997-12-31	267
1998-06-30	305
1998-12-31	198
1999-06-30	147