| Day | Rate | Set date |
|---|---|---|
| 1 May | 52.8500 | .. |
| 4 May | 54.5800 | .. |
| 5 May | 54.1200 | .. |
| 6 May | 56.1500 | .. |
| 7 May | 56.4700 | .. |
| 8 May | 58.1400 | .. |
| 11 May | 57.4800 | .. |
| 12 May | 57.9400 | .. |
| 13 May | 57.3400 | .. |
| 14 May | 56.6900 | .. |
| 15 May | 55.9800 | .. |
| 18 May | 58.4700 | .. |
| 19 May | 58.9200 | .. |
| 20 May | 60.5900 | .. |
| 21 May | 59.9300 | .. |
| 22 May | 60.7800 | .. |
| 25 May | 60.2100 | .. |
| 26 May | 61.2400 | .. |
| 27 May | 62.5000 | .. |
| 28 May | 64.3900 | .. |
| 29 May | 65.5200 | .. |