| Day | Rate | Set date |
|---|---|---|
| 2 May | 44.7800 | .. |
| 3 May | 43.6500 | .. |
| 4 May | 43.7800 | .. |
| 5 May | 44.3200 | .. |
| 6 May | 44.6600 | .. |
| 9 May | 43.4400 | .. |
| 10 May | 44.6600 | .. |
| 11 May | 46.2300 | .. |
| 12 May | 46.7000 | .. |
| 13 May | 46.2100 | .. |
| 16 May | 47.7200 | .. |
| 17 May | 48.3100 | .. |
| 18 May | 48.1900 | .. |
| 19 May | 48.1600 | .. |
| 20 May | 47.7500 | .. |
| 23 May | 48.0800 | .. |
| 24 May | 48.6200 | .. |
| 25 May | 49.5600 | .. |
| 26 May | 49.4800 | .. |
| 27 May | 49.3300 | .. |
| 29 May | 49.5800 | .. |
| 30 May | 49.5100 | .. |
| 31 May | 49.1000 | .. |