Bi-annual	US dollars
1987-06-30	74
1987-12-31	83
1988-06-30	97
1988-12-31	103
1989-06-30	177
1989-12-31	127
1990-06-30	75
1990-12-31	83
1991-06-30	50
1991-12-31	56
1992-06-30	126
1992-12-31	189
1993-06-30	191
1993-12-31	64
1994-06-30	85
1994-12-31	30
1995-06-30	22
1995-12-31	20
1996-06-30	20
1996-12-31	21
1997-06-30	40
1997-12-31	5
1998-06-30	8
1998-12-31	7
1999-06-30	8