Bi-annual	US dollars
1987-06-30	77
1987-12-31	77
1988-06-30	65
1988-12-31	60
1989-06-30	51
1989-12-31	56
1990-06-30	24
1990-12-31	25
1991-06-30	18
1991-12-31	22
1992-06-30	21
1992-12-31	20
1993-06-30	20
1993-12-31	25
1994-06-30	11
1994-12-31	11
1995-06-30	6
1995-12-31	5
1996-06-30	2
1996-12-31	39
1997-06-30	18
1997-12-31	0
1998-06-30	2
1998-12-31	20
1999-06-30	13