| Day | Rate | Set date |
|---|---|---|
| 1 May | 2.2580 | 29.04.2011 |
| 2 May | 2.2569 | 02.05.2011 |
| 3 May | 2.2642 | 03.05.2011 |
| 4 May | 2.2877 | 04.05.2011 |
| 5 May | 2.2888 | 05.05.2011 |
| 6 May | 2.2400 | 06.05.2011 |
| 7 May | 2.2400 | 06.05.2011 |
| 8 May | 2.2400 | 06.05.2011 |
| 9 May | 2.2202 | 09.05.2011 |
| 10 May | 2.2398 | 10.05.2011 |
| 11 May | 2.2644 | 11.05.2011 |
| 12 May | 2.2440 | 12.05.2011 |
| 13 May | 2.2592 | 13.05.2011 |
| 14 May | 2.2592 | 13.05.2011 |
| 15 May | 2.2592 | 13.05.2011 |
| 16 May | 2.2477 | 16.05.2011 |
| 17 May | 2.2484 | 17.05.2011 |
| 18 May | 2.2534 | 18.05.2011 |
| 19 May | 2.2438 | 19.05.2011 |
| 20 May | 2.2610 | 20.05.2011 |
| 21 May | 2.2610 | 20.05.2011 |
| 22 May | 2.2610 | 20.05.2011 |
| 23 May | 2.2534 | 23.05.2011 |
| 24 May | 2.2547 | 24.05.2011 |
| 25 May | 2.2603 | 25.05.2011 |
| 26 May | 2.2655 | 26.05.2011 |
| 27 May | 2.2895 | 27.05.2011 |
| 28 May | 2.2895 | 27.05.2011 |
| 29 May | 2.2895 | 27.05.2011 |
| 30 May | 2.2871 | 30.05.2011 |
| 31 May | 2.2955 | 31.05.2011 |