| Date | Bid | Offer |
|---|---|---|
| Aug 31 2006 | R$ 4.0716 | R$ 4.0742 |
| Aug 30 2006 | R$ 4.0593 | R$ 4.0617 |
| Aug 29 2006 | R$ 4.0647 | R$ 4.0672 |
| Aug 28 2006 | R$ 4.0678 | R$ 4.0700 |
| Aug 25 2006 | R$ 4.0687 | R$ 4.0713 |
| Aug 24 2006 | R$ 4.0601 | R$ 4.0627 |
| Aug 23 2006 | R$ 4.0421 | R$ 4.0445 |
| Aug 22 2006 | R$ 4.0282 | R$ 4.0305 |
| Aug 21 2006 | R$ 4.0430 | R$ 4.0456 |
| Aug 18 2006 | R$ 4.0342 | R$ 4.0367 |
| Aug 17 2006 | R$ 4.0243 | R$ 4.0269 |
| Aug 16 2006 | R$ 4.0390 | R$ 4.0419 |
| Aug 15 2006 | R$ 4.0640 | R$ 4.0666 |
| Aug 14 2006 | R$ 4.0769 | R$ 4.0792 |
| Aug 11 2006 | R$ 4.0826 | R$ 4.0852 |
| Aug 10 2006 | R$ 4.0938 | R$ 4.0966 |
| Aug 09 2006 | R$ 4.1299 | R$ 4.1325 |
| Aug 08 2006 | R$ 4.1658 | R$ 4.1680 |
| Aug 07 2006 | R$ 4.1529 | R$ 4.1555 |
| Aug 04 2006 | R$ 4.1444 | R$ 4.1466 |
| Aug 03 2006 | R$ 4.1223 | R$ 4.1246 |
| Aug 02 2006 | R$ 4.0960 | R$ 4.0982 |
| Aug 01 2006 | R$ 4.1077 | R$ 4.1096 |
Source: Brazilian Central Bank
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Data available from Dec 05 1984 until Feb 27 2026