| Day | Rate | Set date |
|---|---|---|
| 1 May | 4.4015 | 29.04.2011 |
| 2 May | 4.3962 | 02.05.2011 |
| 3 May | 4.3978 | 03.05.2011 |
| 4 May | 4.4304 | 04.05.2011 |
| 5 May | 4.4442 | 05.05.2011 |
| 6 May | 4.3539 | 06.05.2011 |
| 7 May | 4.3539 | 06.05.2011 |
| 8 May | 4.3539 | 06.05.2011 |
| 9 May | 4.3047 | 09.05.2011 |
| 10 May | 4.2952 | 10.05.2011 |
| 11 May | 4.2777 | 11.05.2011 |
| 12 May | 4.2643 | 12.05.2011 |
| 13 May | 4.2940 | 13.05.2011 |
| 14 May | 4.2940 | 13.05.2011 |
| 15 May | 4.2940 | 13.05.2011 |
| 16 May | 4.3228 | 16.05.2011 |
| 17 May | 4.3200 | 17.05.2011 |
| 18 May | 4.3165 | 18.05.2011 |
| 19 May | 4.3120 | 19.05.2011 |
| 20 May | 4.2974 | 20.05.2011 |
| 21 May | 4.2974 | 20.05.2011 |
| 22 May | 4.2974 | 20.05.2011 |
| 23 May | 4.2887 | 23.05.2011 |
| 24 May | 4.2971 | 24.05.2011 |
| 25 May | 4.3086 | 25.05.2011 |
| 26 May | 4.3078 | 26.05.2011 |
| 27 May | 4.3280 | 27.05.2011 |
| 28 May | 4.3280 | 27.05.2011 |
| 29 May | 4.3280 | 27.05.2011 |
| 30 May | 4.3080 | 30.05.2011 |
| 31 May | 4.3335 | 31.05.2011 |