Bi-annual	US dollars
1987-06-30	63
1987-12-31	79
1988-06-30	56
1988-12-31	146
1989-06-30	56
1989-12-31	81
1990-06-30	70
1990-12-31	56
1991-06-30	34
1991-12-31	35
1992-06-30	34
1992-12-31	0
1993-06-30	35
1993-12-31	236
1994-06-30	341
1994-12-31	124
1995-06-30	269
1995-12-31	267
1996-06-30	258
1996-12-31	204
1997-06-30	100
1997-12-31	0
1998-06-30	20
1998-12-31	125
1999-06-30	25