Bi-annual	US dollars
1987-06-30	71
1987-12-31	77
1988-06-30	280
1988-12-31	141
1989-06-30	116
1989-12-31	100
1990-06-30	87
1990-12-31	44
1991-06-30	75
1991-12-31	73
1992-06-30	86
1992-12-31	76
1993-06-30	59
1993-12-31	71
1994-06-30	31
1994-12-31	66
1995-06-30	60
1995-12-31	90
1996-06-30	48
1996-12-31	106
1997-06-30	101
1997-12-31	104
1998-06-30	170
1998-12-31	47
1999-06-30	63