Bi-annual	US dollars
1987-06-30	190
1987-12-31	196
1988-06-30	152
1988-12-31	123
1989-06-30	116
1989-12-31	147
1990-06-30	92
1990-12-31	66
1991-06-30	66
1991-12-31	60
1992-06-30	29
1992-12-31	29
1993-06-30	20
1993-12-31	24
1994-06-30	56
1994-12-31	33
1995-06-30	73
1995-12-31	91
1996-06-30	93
1996-12-31	128
1997-06-30	33
1997-12-31	39
1998-06-30	67
1998-12-31	25
1999-06-30	66