| Date | Currency |
|---|---|
| 07/06/2011 | 61.22 |
| 31/05/2011 | 60.60 |
| 24/05/2011 | 60.96 |
| 17/05/2011 | 61.02 |
| 11/05/2011 | 61.35 |
| 03/05/2011 | 61.62 |
| 26/04/2011 | 60.54 |
| 19/04/2011 | 59.86 |
| 12/04/2011 | 59.96 |
| 04/04/2011 | 59.36 |
| 29/03/2011 | 59.56 |
| 23/03/2011 | 59.14 |
| 15/03/2011 | 58.47 |
| 10/03/2011 | 58.97 |
| 01/03/2011 | 57.61 |
| $ 1 | 12727.96 | +0.134% |
| € 1 | 13781.84 | +0.459% |
| ₽ 1 | 139.46 | +0.288% |