Bi-annual	US dollars
1987-06-30	26
1987-12-31	19
1988-06-30	15
1988-12-31	22
1989-06-30	12
1989-12-31	2
1990-06-30	0
1990-12-31	0
1991-06-30	16
1991-12-31	2
1992-06-30	8
1992-12-31	5
1993-06-30	15
1993-12-31	16
1994-06-30	26
1994-12-31	41
1995-06-30	29
1995-12-31	37
1996-06-30	34
1996-12-31	34
1997-06-30	25
1997-12-31	79
1998-06-30	47
1998-12-31	80
1999-06-30	57