Bi-annual	US dollars
1987-06-30	123
1987-12-31	125
1988-06-30	119
1988-12-31	60
1989-06-30	42
1989-12-31	40
1990-06-30	24
1990-12-31	12
1991-06-30	15
1991-12-31	22
1992-06-30	29
1992-12-31	29
1993-06-30	18
1993-12-31	13
1994-06-30	17
1994-12-31	17
1995-06-30	14
1995-12-31	14
1996-06-30	11
1996-12-31	10
1997-06-30	7
1997-12-31	12
1998-06-30	15
1998-12-31	10
1999-06-30	3