Bi-annual	US dollars
1987-06-30	47
1987-12-31	79
1988-06-30	0
1988-12-31	25
1989-06-30	98
1989-12-31	60
1990-06-30	19
1990-12-31	21
1991-06-30	37
1991-12-31	15
1992-06-30	51
1992-12-31	44
1993-06-30	65
1993-12-31	514
1994-06-30	318
1994-12-31	83
1995-06-30	60
1995-12-31	73
1996-06-30	23
1996-12-31	65
1997-06-30	78
1997-12-31	67
1998-06-30	38
1998-12-31	100
1999-06-30	25