| Day | Rate | Set date |
|---|---|---|
| 1 May | 8.9140 | 29.04.2011 |
| 2 May | 8.9267 | 02.05.2011 |
| 3 May | 8.9581 | 03.05.2011 |
| 4 May | 9.0105 | 04.05.2011 |
| 5 May | 9.0682 | 05.05.2011 |
| 6 May | 9.0215 | 06.05.2011 |
| 7 May | 9.0215 | 06.05.2011 |
| 8 May | 9.0215 | 06.05.2011 |
| 9 May | 8.9791 | 09.05.2011 |
| 10 May | 8.9565 | 10.05.2011 |
| 11 May | 8.9460 | 11.05.2011 |
| 12 May | 8.9566 | 12.05.2011 |
| 13 May | 8.9951 | 13.05.2011 |
| 14 May | 8.9951 | 13.05.2011 |
| 15 May | 8.9951 | 13.05.2011 |
| 16 May | 9.0090 | 16.05.2011 |
| 17 May | 9.0015 | 17.05.2011 |
| 18 May | 8.9840 | 18.05.2011 |
| 19 May | 8.9640 | 19.05.2011 |
| 20 May | 8.9324 | 20.05.2011 |
| 21 May | 8.9324 | 20.05.2011 |
| 22 May | 8.9324 | 20.05.2011 |
| 23 May | 8.9155 | 23.05.2011 |
| 24 May | 8.9200 | 24.05.2011 |
| 25 May | 8.9150 | 25.05.2011 |
| 26 May | 8.9010 | 26.05.2011 |
| 27 May | 8.9108 | 27.05.2011 |
| 28 May | 8.9108 | 27.05.2011 |
| 29 May | 8.9108 | 27.05.2011 |
| 30 May | 8.8914 | 30.05.2011 |
| 31 May | 8.8932 | 31.05.2011 |