Bi-annual	US dollars
1987-06-30	408
1987-12-31	336
1988-06-30	406
1988-12-31	358
1989-06-30	378
1989-12-31	258
1990-06-30	225
1990-12-31	249
1991-06-30	319
1991-12-31	213
1992-06-30	232
1992-12-31	615
1993-06-30	519
1993-12-31	631
1994-06-30	407
1994-12-31	278
1995-06-30	679
1995-12-31	671
1996-06-30	640
1996-12-31	788
1997-06-30	601
1997-12-31	633
1998-06-30	769
1998-12-31	428
1999-06-30	591