Bi-annual	US dollars
1987-06-30	29
1987-12-31	32
1988-06-30	17
1988-12-31	11
1989-06-30	17
1989-12-31	66
1990-06-30	75
1990-12-31	60
1991-06-30	60
1991-12-31	54
1992-06-30	67
1992-12-31	59
1993-06-30	18
1993-12-31	28
1994-06-30	15
1994-12-31	31
1995-06-30	0
1995-12-31	22
1996-06-30	17
1996-12-31	430
1997-06-30	534
1997-12-31	109
1998-06-30	67
1998-12-31	165
1999-06-30	35