Bi-annual	US dollars
1987-06-30	0
1987-12-31	4
1988-06-30	17
1988-12-31	0
1989-06-30	0
1989-12-31	0
1990-06-30	0
1990-12-31	0
1991-06-30	11
1991-12-31	4
1992-06-30	15
1992-12-31	11
1993-06-30	0
1993-12-31	0
1994-06-30	39
1994-12-31	111
1995-06-30	81
1995-12-31	129
1996-06-30	85
1996-12-31	58
1997-06-30	73
1997-12-31	0
1998-06-30	20
1998-12-31	0
1999-06-30	0