| Day | Rate | Set date |
|---|---|---|
| 1 May | 4.7190 | .. |
| 2 May | 4.6740 | .. |
| 5 May | 4.6880 | .. |
| 6 May | 4.7990 | .. |
| 7 May | 4.7400 | .. |
| 8 May | 4.5720 | .. |
| 9 May | 4.5310 | .. |
| 12 May | 4.4340 | .. |
| 13 May | 4.3580 | .. |
| 14 May | 4.3670 | .. |
| 15 May | 4.4690 | .. |
| 16 May | 4.4130 | .. |
| 19 May | 4.4700 | .. |
| 20 May | 4.5520 | .. |
| 21 May | 4.4730 | .. |
| 22 May | 4.3590 | .. |
| 23 May | 4.4050 | .. |
| 26 May | 4.3940 | .. |
| 27 May | 4.5050 | .. |
| 28 May | 4.6190 | .. |
| 29 May | 4.5590 | .. |
| 30 May | 4.5420 | .. |