Bi-annual	US dollars
1987-06-30	21
1987-12-31	36
1988-06-30	41
1988-12-31	52
1989-06-30	23
1989-12-31	13
1990-06-30	44
1990-12-31	12
1991-06-30	19
1991-12-31	9
1992-06-30	17
1992-12-31	14
1993-06-30	11
1993-12-31	18
1994-06-30	51
1994-12-31	11
1995-06-30	5
1995-12-31	2
1996-06-30	113
1996-12-31	2
1997-06-30	22
1997-12-31	63
1998-06-30	80
1998-12-31	70
1999-06-30	8