| Day | Rate | Set date |
|---|---|---|
| 1 May | 7.7820 | 29.04.2011 |
| 2 May | 7.7800 | 02.05.2011 |
| 3 May | 7.7995 | 03.05.2011 |
| 4 May | 7.8710 | 04.05.2011 |
| 5 May | 7.9300 | 05.05.2011 |
| 6 May | 7.9450 | 06.05.2011 |
| 7 May | 7.9450 | 06.05.2011 |
| 8 May | 7.9450 | 06.05.2011 |
| 9 May | 7.8665 | 09.05.2011 |
| 10 May | 7.8035 | 10.05.2011 |
| 11 May | 7.7890 | 11.05.2011 |
| 12 May | 7.8010 | 12.05.2011 |
| 13 May | 7.8405 | 13.05.2011 |
| 14 May | 7.8405 | 13.05.2011 |
| 15 May | 7.8405 | 13.05.2011 |
| 16 May | 7.8670 | 16.05.2011 |
| 17 May | 7.9385 | 17.05.2011 |
| 18 May | 7.9360 | 18.05.2011 |
| 19 May | 7.8725 | 19.05.2011 |
| 20 May | 7.8280 | 20.05.2011 |
| 21 May | 7.8280 | 20.05.2011 |
| 22 May | 7.8280 | 20.05.2011 |
| 23 May | 7.8475 | 23.05.2011 |
| 24 May | 7.8385 | 24.05.2011 |
| 25 May | 7.8240 | 25.05.2011 |
| 26 May | 7.7900 | 26.05.2011 |
| 27 May | 7.7690 | 27.05.2011 |
| 28 May | 7.7690 | 27.05.2011 |
| 29 May | 7.7690 | 27.05.2011 |
| 30 May | 7.7485 | 30.05.2011 |
| 31 May | 7.7590 | 31.05.2011 |