Bi-annual	US dollars
1987-06-30	1203
1987-12-31	1185
1988-06-30	948
1988-12-31	855
1989-06-30	632
1989-12-31	632
1990-06-30	384
1990-12-31	349
1991-06-30	256
1991-12-31	211
1992-06-30	177
1992-12-31	89
1993-06-30	77
1993-12-31	44
1994-06-30	45
1994-12-31	36
1995-06-30	21
1995-12-31	20
1996-06-30	12
1996-12-31	12
1997-06-30	10
1997-12-31	5
1998-06-30	5
1998-12-31	12
1999-06-30	9