Bi-annual	US dollars
1987-06-30	26
1987-12-31	53
1988-06-30	34
1988-12-31	29
1989-06-30	8
1989-12-31	10
1990-06-30	14
1990-12-31	10
1991-06-30	8
1991-12-31	6
1992-06-30	8
1992-12-31	14
1993-06-30	12
1993-12-31	10
1994-06-30	22
1994-12-31	22
1995-06-30	89
1995-12-31	19
1996-06-30	22
1996-12-31	41
1997-06-30	13
1997-12-31	16
1998-06-30	25
1998-12-31	18
1999-06-30	25