Bi-annual	US dollars
1987-06-30	71
1987-12-31	113
1988-06-30	7
1988-12-31	92
1989-06-30	133
1989-12-31	113
1990-06-30	70
1990-12-31	71
1991-06-30	117
1991-12-31	88
1992-06-30	59
1992-12-31	106
1993-06-30	66
1993-12-31	80
1994-06-30	43
1994-12-31	80
1995-06-30	89
1995-12-31	105
1996-06-30	101
1996-12-31	101
1997-06-30	8
1997-12-31	25
1998-06-30	462
1998-12-31	749
1999-06-30	604