| Day | Rate | Set date |
|---|---|---|
| 3 May | 38.2100 | .. |
| 4 May | 38.9800 | .. |
| 5 May | 39.5700 | .. |
| 6 May | 39.3700 | .. |
| 7 May | 39.9300 | .. |
| 10 May | 38.9300 | .. |
| 11 May | 40.0600 | .. |
| 12 May | 40.7700 | .. |
| 13 May | 41.0800 | .. |
| 14 May | 41.3800 | .. |
| 17 May | 41.5500 | .. |
| 18 May | 40.5400 | .. |
| 19 May | 41.5000 | .. |
| 20 May | 40.9200 | .. |
| 21 May | 39.9300 | .. |
| 24 May | 41.7200 | .. |
| 25 May | 41.1400 | .. |
| 26 May | 40.7000 | .. |
| 27 May | 39.4400 | .. |
| 28 May | 39.8800 | .. |