Bi-annual	US dollars
1987-06-30	74
1987-12-31	28
1988-06-30	20
1988-12-31	18
1989-06-30	11
1989-12-31	10
1990-06-30	9
1990-12-31	31
1991-06-30	37
1991-12-31	17
1992-06-30	44
1992-12-31	39
1993-06-30	8
1993-12-31	24
1994-06-30	25
1994-12-31	33
1995-06-30	19
1995-12-31	60
1996-06-30	106
1996-12-31	72
1997-06-30	120
1997-12-31	41
1998-06-30	272
1998-12-31	97
1999-06-30	49