Bi-annual	US dollars
1987-06-30	26
1987-12-31	42
1988-06-30	7
1988-12-31	33
1989-06-30	31
1989-12-31	50
1990-06-30	28
1990-12-31	64
1991-06-30	78
1991-12-31	73
1992-06-30	61
1992-12-31	59
1993-06-30	95
1993-12-31	41
1994-06-30	42
1994-12-31	33
1995-06-30	367
1995-12-31	161
1996-06-30	48
1996-12-31	125
1997-06-30	502
1997-12-31	82
1998-06-30	208
1998-12-31	63
1999-06-30	0