Bi-annual	US dollars
1987-06-30	116
1987-12-31	132
1988-06-30	114
1988-12-31	125
1989-06-30	31
1989-12-31	29
1990-06-30	23
1990-12-31	27
1991-06-30	28
1991-12-31	13
1992-06-30	10
1992-12-31	6
1993-06-30	6
1993-12-31	7
1994-06-30	9
1994-12-31	9
1995-06-30	6
1995-12-31	5
1996-06-30	17
1996-12-31	7
1997-06-30	7
1997-12-31	5
1998-06-30	82
1998-12-31	33
1999-06-30	91