Bi-annual	US dollars
1987-06-30	252
1987-12-31	262
1988-06-30	252
1988-12-31	269
1989-06-30	284
1989-12-31	119
1990-06-30	129
1990-12-31	89
1991-06-30	86
1991-12-31	120
1992-06-30	70
1992-12-31	33
1993-06-30	105
1993-12-31	189
1994-06-30	193
1994-12-31	113
1995-06-30	223
1995-12-31	257
1996-06-30	359
1996-12-31	41
1997-06-30	131
1997-12-31	216
1998-06-30	190
1998-12-31	83
1999-06-30	372