Bi-annual	US dollars
1987-06-30	47
1987-12-31	38
1988-06-30	46
1988-12-31	29
1989-06-30	33
1989-12-31	32
1990-06-30	30
1990-12-31	29
1991-06-30	24
1991-12-31	28
1992-06-30	27
1992-12-31	29
1993-06-30	57
1993-12-31	10
1994-06-30	19
1994-12-31	22
1995-06-30	22
1995-12-31	17
1996-06-30	25
1996-12-31	24
1997-06-30	13
1997-12-31	56
1998-06-30	80
1998-12-31	98
1999-06-30	123