Bi-annual	US dollars
1987-06-30	61
1987-12-31	8
1988-06-30	17
1988-12-31	22
1989-06-30	31
1989-12-31	5
1990-06-30	10
1990-12-31	2
1991-06-30	2
1991-12-31	2
1992-06-30	4
1992-12-31	29
1993-06-30	54
1993-12-31	93
1994-06-30	8
1994-12-31	0
1995-06-30	5
1995-12-31	62
1996-06-30	135
1996-12-31	19
1997-06-30	28
1997-12-31	25
1998-06-30	25
1998-12-31	15
1999-06-30	11