| Date | Bid | Offer |
|---|---|---|
| Dec 31 1997 | R$ 1.1156 | R$ 1.1164 |
| Dec 30 1997 | R$ 1.1156 | R$ 1.1164 |
| Dec 29 1997 | R$ 1.1149 | R$ 1.1157 |
| Dec 26 1997 | R$ 1.1143 | R$ 1.1151 |
| Dec 24 1997 | R$ 1.1142 | R$ 1.1150 |
| Dec 23 1997 | R$ 1.1142 | R$ 1.1150 |
| Dec 22 1997 | R$ 1.1143 | R$ 1.1151 |
| Dec 19 1997 | R$ 1.1140 | R$ 1.1148 |
| Dec 18 1997 | R$ 1.1136 | R$ 1.1144 |
| Dec 17 1997 | R$ 1.1133 | R$ 1.1141 |
| Dec 16 1997 | R$ 1.1126 | R$ 1.1134 |
| Dec 15 1997 | R$ 1.1135 | R$ 1.1143 |
| Dec 12 1997 | R$ 1.1154 | R$ 1.1162 |
| Dec 11 1997 | R$ 1.1143 | R$ 1.1151 |
| Dec 10 1997 | R$ 1.1121 | R$ 1.1129 |
| Dec 09 1997 | R$ 1.1114 | R$ 1.1122 |
| Dec 08 1997 | R$ 1.1111 | R$ 1.1119 |
| Dec 05 1997 | R$ 1.1097 | R$ 1.1105 |
| Dec 04 1997 | R$ 1.1098 | R$ 1.1106 |
| Dec 03 1997 | R$ 1.1096 | R$ 1.1104 |
| Dec 02 1997 | R$ 1.1088 | R$ 1.1096 |
| Dec 01 1997 | R$ 1.1088 | R$ 1.1096 |
Source: Brazilian Central Bank
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< November 1997 January 1998 >
Data available from Dec 03 1984 until Feb 27 2026