Bi-annual	US dollars
1987-06-30	461
1987-12-31	434
1988-06-30	348
1988-12-31	378
1989-06-30	358
1989-12-31	368
1990-06-30	310
1990-12-31	351
1991-06-30	478
1991-12-31	835
1992-06-30	929
1992-12-31	1121
1993-06-30	1026
1993-12-31	333
1994-06-30	444
1994-12-31	260
1995-06-30	248
1995-12-31	240
1996-06-30	194
1996-12-31	1246
1997-06-30	101
1997-12-31	56
1998-06-30	102
1998-12-31	100
1999-06-30	106