Bi-annual	US dollars
1987-06-30	60
1987-12-31	57
1988-06-30	46
1988-12-31	36
1989-06-30	37
1989-12-31	24
1990-06-30	16
1990-12-31	17
1991-06-30	11
1991-12-31	19
1992-06-30	19
1992-12-31	14
1993-06-30	38
1993-12-31	15
1994-06-30	42
1994-12-31	70
1995-06-30	43
1995-12-31	68
1996-06-30	23
1996-12-31	62
1997-06-30	33
1997-12-31	114
1998-06-30	98
1998-12-31	43
1999-06-30	107