| Day | Rate | Set date |
|---|---|---|
| 1 May | 17.1186 | 29.04.2011 |
| 2 May | 17.0900 | 02.05.2011 |
| 3 May | 17.1090 | 03.05.2011 |
| 4 May | 17.2174 | 04.05.2011 |
| 5 May | 17.3177 | 05.05.2011 |
| 6 May | 16.9505 | 06.05.2011 |
| 7 May | 16.9505 | 06.05.2011 |
| 8 May | 16.9505 | 06.05.2011 |
| 9 May | 16.7077 | 09.05.2011 |
| 10 May | 16.6538 | 10.05.2011 |
| 11 May | 16.5996 | 11.05.2011 |
| 12 May | 16.5764 | 12.05.2011 |
| 13 May | 16.6091 | 13.05.2011 |
| 14 May | 16.6091 | 13.05.2011 |
| 15 May | 16.6091 | 13.05.2011 |
| 16 May | 16.6180 | 16.05.2011 |
| 17 May | 16.6550 | 17.05.2011 |
| 18 May | 16.6891 | 18.05.2011 |
| 19 May | 16.6561 | 19.05.2011 |
| 20 May | 16.5655 | 20.05.2011 |
| 21 May | 16.5655 | 20.05.2011 |
| 22 May | 16.5655 | 20.05.2011 |
| 23 May | 16.4377 | 23.05.2011 |
| 24 May | 16.5036 | 24.05.2011 |
| 25 May | 16.4861 | 25.05.2011 |
| 26 May | 16.5107 | 26.05.2011 |
| 27 May | 16.6077 | 27.05.2011 |
| 28 May | 16.6077 | 27.05.2011 |
| 29 May | 16.6077 | 27.05.2011 |
| 30 May | 16.5755 | 30.05.2011 |
| 31 May | 16.6521 | 31.05.2011 |