Bi-annual	US dollars
1987-06-30	408
1987-12-31	306
1988-06-30	227
1988-12-31	356
1989-06-30	392
1989-12-31	132
1990-06-30	317
1990-12-31	405
1991-06-30	261
1991-12-31	263
1992-06-30	270
1992-12-31	211
1993-06-30	213
1993-12-31	288
1994-06-30	377
1994-12-31	67
1995-06-30	167
1995-12-31	127
1996-06-30	319
1996-12-31	142
1997-06-30	105
1997-12-31	168
1998-06-30	35
1998-12-31	78
1999-06-30	60