| Date | Currency |
|---|---|
| 07/06/2011 | 15.08 |
| 31/05/2011 | 14.81 |
| 24/05/2011 | 14.59 |
| 17/05/2011 | 14.69 |
| 11/05/2011 | 14.97 |
| 03/05/2011 | 15.29 |
| 26/04/2011 | 15.04 |
| 19/04/2011 | 14.90 |
| 12/04/2011 | 15.05 |
| 04/04/2011 | 14.81 |
| 29/03/2011 | 14.62 |
| 23/03/2011 | 14.75 |
| 15/03/2011 | 14.48 |
| 10/03/2011 | 14.53 |
| 01/03/2011 | 14.34 |
| $ 1 | 12727.96 | +0.134% |
| € 1 | 13781.84 | +0.459% |
| ₽ 1 | 139.46 | +0.288% |