| Day | Rate | Set date |
|---|---|---|
| 1 May | 7.7180 | .. |
| 2 May | 7.7300 | .. |
| 3 May | 7.9470 | .. |
| 4 May | 7.9380 | .. |
| 7 May | 7.7790 | .. |
| 8 May | 7.6370 | .. |
| 9 May | 7.7200 | .. |
| 10 May | 7.7260 | .. |
| 11 May | 7.8990 | .. |
| 14 May | 7.9520 | .. |
| 15 May | 7.8640 | .. |
| 16 May | 7.8900 | .. |
| 17 May | 8.0750 | .. |
| 18 May | 7.9440 | .. |
| 21 May | 7.9130 | .. |
| 22 May | 7.8010 | .. |
| 23 May | 7.7570 | .. |
| 24 May | 7.6810 | .. |
| 25 May | 7.6400 | .. |
| 29 May | 7.5910 | .. |
| 30 May | 7.9410 | .. |
| 31 May | 7.9350 | .. |