Bi-annual	US dollars
1987-06-30	21
1987-12-31	25
1988-06-30	10
1988-12-31	7
1989-06-30	5
1989-12-31	50
1990-06-30	65
1990-12-31	60
1991-06-30	60
1991-12-31	54
1992-06-30	67
1992-12-31	58
1993-06-30	15
1993-12-31	24
1994-06-30	15
1994-12-31	30
1995-06-30	0
1995-12-31	22
1996-06-30	16
1996-12-31	426
1997-06-30	532
1997-12-31	105
1998-06-30	67
1998-12-31	120
1999-06-30	33