| Day | Rate | Set date |
|---|---|---|
| 1 May | 26.0300 | .. |
| 2 May | 25.6700 | .. |
| 5 May | 26.4900 | .. |
| 6 May | 25.7200 | .. |
| 7 May | 26.2300 | .. |
| 8 May | 26.9800 | .. |
| 9 May | 27.7200 | .. |
| 12 May | 27.3500 | .. |
| 13 May | 28.5000 | .. |
| 14 May | 29.1700 | .. |
| 15 May | 28.7400 | .. |
| 16 May | 29.1400 | .. |
| 19 May | 28.8300 | .. |
| 20 May | 29.2800 | .. |
| 21 May | 29.0300 | .. |
| 22 May | 28.8500 | .. |
| 23 May | 29.1600 | .. |
| 27 May | 29.3500 | .. |
| 28 May | 28.5800 | .. |
| 29 May | 29.1000 | .. |
| 30 May | 29.5600 | .. |