Bi-annual	US dollars
1987-06-30	68
1987-12-31	66
1988-06-30	67
1988-12-31	108
1989-06-30	85
1989-12-31	111
1990-06-30	77
1990-12-31	66
1991-06-30	83
1991-12-31	82
1992-06-30	61
1992-12-31	62
1993-06-30	33
1993-12-31	40
1994-06-30	48
1994-12-31	58
1995-06-30	37
1995-12-31	31
1996-06-30	61
1996-12-31	120
1997-06-30	170
1997-12-31	16
1998-06-30	47
1998-12-31	50
1999-06-30	19