Bi-annual	US dollars
1987-06-30	31
1987-12-31	57
1988-06-30	41
1988-12-31	63
1989-06-30	43
1989-12-31	27
1990-06-30	52
1990-12-31	52
1991-06-30	41
1991-12-31	34
1992-06-30	21
1992-12-31	20
1993-06-30	38
1993-12-31	41
1994-06-30	34
1994-12-31	45
1995-06-30	105
1995-12-31	101
1996-06-30	166
1996-12-31	72
1997-06-30	38
1997-12-31	74
1998-06-30	33
1998-12-31	40
1999-06-30	126