Bi-annual	US dollars
1987-06-30	5
1987-12-31	11
1988-06-30	7
1988-12-31	7
1989-06-30	8
1989-12-31	10
1990-06-30	10
1990-12-31	14
1991-06-30	13
1991-12-31	32
1992-06-30	185
1992-12-31	27
1993-06-30	18
1993-12-31	16
1994-06-30	19
1994-12-31	14
1995-06-30	21
1995-12-31	11
1996-06-30	30
1996-12-31	12
1997-06-30	12
1997-12-31	18
1998-06-30	15
1998-12-31	15
1999-06-30	11