Bi-annual	US dollars
1987-06-30	39
1987-12-31	53
1988-06-30	22
1988-12-31	61
1989-06-30	37
1989-12-31	5
1990-06-30	19
1990-12-31	19
1991-06-30	23
1991-12-31	19
1992-06-30	15
1992-12-31	17
1993-06-30	6
1993-12-31	13
1994-06-30	19
1994-12-31	224
1995-06-30	232
1995-12-31	287
1996-06-30	235
1996-12-31	269
1997-06-30	145
1997-12-31	275
1998-06-30	195
1998-12-31	240
1999-06-30	189