Bi-annual	US dollars
1987-06-30	26
1987-12-31	25
1988-06-30	15
1988-12-31	31
1989-06-30	17
1989-12-31	31
1990-06-30	19
1990-12-31	15
1991-06-30	21
1991-12-31	7
1992-06-30	8
1992-12-31	8
1993-06-30	6
1993-12-31	1
1994-06-30	2
1994-12-31	3
1995-06-30	32
1995-12-31	33
1996-06-30	26
1996-12-31	31
1997-06-30	67
1997-12-31	67
1998-06-30	72
1998-12-31	67
1999-06-30	16