Bi-annual	US dollars
1987-06-30	37
1987-12-31	13
1988-06-30	12
1988-12-31	13
1989-06-30	12
1989-12-31	10
1990-06-30	14
1990-12-31	29
1991-06-30	60
1991-12-31	43
1992-06-30	2
1992-12-31	2
1993-06-30	26
1993-12-31	27
1994-06-30	22
1994-12-31	28
1995-06-30	48
1995-12-31	47
1996-06-30	45
1996-12-31	80
1997-06-30	65
1997-12-31	71
1998-06-30	52
1998-12-31	58
1999-06-30	55