| Day | Rate | Set date |
|---|---|---|
| 1 May | 26.4400 | .. |
| 4 May | 27.2000 | .. |
| 5 May | 30.9700 | .. |
| 6 May | 29.7200 | .. |
| 7 May | 29.4600 | .. |
| 8 May | 30.9700 | .. |
| 11 May | 29.6300 | .. |
| 12 May | 29.9800 | .. |
| 13 May | 29.1900 | .. |
| 14 May | 31.1300 | .. |
| 15 May | 32.5000 | .. |
| 18 May | 34.8100 | .. |
| 19 May | 34.6500 | .. |
| 20 May | 35.7500 | .. |
| 21 May | 36.0600 | .. |
| 22 May | 35.1300 | .. |
| 25 May | 35.5300 | .. |
| 26 May | 36.1700 | .. |
| 27 May | 34.7400 | .. |
| 28 May | 35.2900 | .. |
| 29 May | 35.3300 | .. |