Bi-annual	US dollars
1987-06-30	11
1987-12-31	28
1988-06-30	26
1988-12-31	14
1989-06-30	12
1989-12-31	23
1990-06-30	12
1990-12-31	15
1991-06-30	19
1991-12-31	30
1992-06-30	10
1992-12-31	53
1993-06-30	98
1993-12-31	21
1994-06-30	102
1994-12-31	23
1995-06-30	181
1995-12-31	178
1996-06-30	28
1996-12-31	216
1997-06-30	43
1997-12-31	39
1998-06-30	120
1998-12-31	38
1999-06-30	2