Bi-annual	US dollars
1987-06-30	126
1987-12-31	149
1988-06-30	177
1988-12-31	114
1989-06-30	174
1989-12-31	150
1990-06-30	185
1990-12-31	185
1991-06-30	196
1991-12-31	185
1992-06-30	207
1992-12-31	203
1993-06-30	174
1993-12-31	170
1994-06-30	364
1994-12-31	67
1995-06-30	54
1995-12-31	60
1996-06-30	109
1996-12-31	63
1997-06-30	48
1997-12-31	130
1998-06-30	58
1998-12-31	80
1999-06-30	102