| Day | Rate | Set date |
|---|---|---|
| 1 May | 3.9356 | 29.04.2011 |
| 2 May | 3.9297 | 02.05.2011 |
| 3 May | 3.9443 | 03.05.2011 |
| 4 May | 3.9366 | 04.05.2011 |
| 5 May | 3.9475 | 05.05.2011 |
| 6 May | 3.9515 | 06.05.2011 |
| 7 May | 3.9515 | 06.05.2011 |
| 8 May | 3.9515 | 06.05.2011 |
| 9 May | 3.9383 | 09.05.2011 |
| 10 May | 3.9315 | 10.05.2011 |
| 11 May | 3.9013 | 11.05.2011 |
| 12 May | 3.9150 | 12.05.2011 |
| 13 May | 3.9173 | 13.05.2011 |
| 14 May | 3.9173 | 13.05.2011 |
| 15 May | 3.9173 | 13.05.2011 |
| 16 May | 3.9303 | 16.05.2011 |
| 17 May | 3.9288 | 17.05.2011 |
| 18 May | 3.9263 | 18.05.2011 |
| 19 May | 3.9236 | 19.05.2011 |
| 20 May | 3.9266 | 20.05.2011 |
| 21 May | 3.9266 | 20.05.2011 |
| 22 May | 3.9266 | 20.05.2011 |
| 23 May | 3.9485 | 23.05.2011 |
| 24 May | 3.9473 | 24.05.2011 |
| 25 May | 3.9678 | 25.05.2011 |
| 26 May | 3.9675 | 26.05.2011 |
| 27 May | 3.9780 | 27.05.2011 |
| 28 May | 3.9780 | 27.05.2011 |
| 29 May | 3.9780 | 27.05.2011 |
| 30 May | 3.9750 | 30.05.2011 |
| 31 May | 3.9558 | 31.05.2011 |