Bi-annual	US dollars
1987-06-30	82
1987-12-31	70
1988-06-30	32
1988-12-31	24
1989-06-30	5
1989-12-31	34
1990-06-30	5
1990-12-31	2
1991-06-30	2
1991-12-31	9
1992-06-30	19
1992-12-31	30
1993-06-30	26
1993-12-31	31
1994-06-30	63
1994-12-31	66
1995-06-30	67
1995-12-31	45
1996-06-30	56
1996-12-31	53
1997-06-30	103
1997-12-31	128
1998-06-30	138
1998-12-31	113
1999-06-30	399