Bi-annual	US dollars
1987-06-30	110
1987-12-31	92
1988-06-30	94
1988-12-31	116
1989-06-30	28
1989-12-31	13
1990-06-30	17
1990-12-31	10
1991-06-30	8
1991-12-31	6
1992-06-30	6
1992-12-31	62
1993-06-30	42
1993-12-31	40
1994-06-30	80
1994-12-31	74
1995-06-30	51
1995-12-31	56
1996-06-30	6
1996-12-31	19
1997-06-30	7
1997-12-31	15
1998-06-30	8
1998-12-31	3
1999-06-30	0