Bi-annual	US dollars
1987-06-30	69
1987-12-31	79
1988-06-30	39
1988-12-31	56
1989-06-30	22
1989-12-31	34
1990-06-30	19
1990-12-31	83
1991-06-30	73
1991-12-31	0
1992-06-30	19
1992-12-31	79
1993-06-30	99
1993-12-31	22
1994-06-30	20
1994-12-31	183
1995-06-30	92
1995-12-31	54
1996-06-30	9
1996-12-31	50
1997-06-30	78
1997-12-31	7
1998-06-30	100
1998-12-31	200
1999-06-30	136