| Date | Bid | Offer |
|---|---|---|
| Sep 29 2006 | R$ 4.0673 | R$ 4.0697 |
| Sep 28 2006 | R$ 4.0884 | R$ 4.0906 |
| Sep 27 2006 | R$ 4.1263 | R$ 4.1289 |
| Sep 26 2006 | R$ 4.1646 | R$ 4.1672 |
| Sep 25 2006 | R$ 4.2177 | R$ 4.2199 |
| Sep 22 2006 | R$ 4.2139 | R$ 4.2163 |
| Sep 21 2006 | R$ 4.1770 | R$ 4.1796 |
| Sep 20 2006 | R$ 4.0942 | R$ 4.0964 |
| Sep 19 2006 | R$ 4.0512 | R$ 4.0534 |
| Sep 18 2006 | R$ 4.0332 | R$ 4.0357 |
| Sep 15 2006 | R$ 4.0502 | R$ 4.0525 |
| Sep 14 2006 | R$ 4.0722 | R$ 4.0744 |
| Sep 13 2006 | R$ 4.0703 | R$ 4.0729 |
| Sep 12 2006 | R$ 4.0720 | R$ 4.0745 |
| Sep 11 2006 | R$ 4.0542 | R$ 4.0563 |
| Sep 08 2006 | R$ 4.0233 | R$ 4.0259 |
| Sep 06 2006 | R$ 4.0390 | R$ 4.0414 |
| Sep 05 2006 | R$ 4.0300 | R$ 4.0326 |
| Sep 04 2006 | R$ 4.0533 | R$ 4.0559 |
| Sep 01 2006 | R$ 4.0894 | R$ 4.0916 |
Source: Brazilian Central Bank
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Data available from Dec 05 1984 until Feb 27 2026