| Day | Rate | Set date |
|---|---|---|
| 1 May | 106.1600 | .. |
| 2 May | 105.2200 | .. |
| 3 May | 102.5400 | .. |
| 4 May | 98.4900 | .. |
| 7 May | 97.9400 | .. |
| 8 May | 97.0100 | .. |
| 9 May | 96.8100 | .. |
| 10 May | 97.0800 | .. |
| 11 May | 96.1300 | .. |
| 14 May | 94.7800 | .. |
| 15 May | 93.9800 | .. |
| 16 May | 92.8100 | .. |
| 17 May | 92.5600 | .. |
| 18 May | 91.4800 | .. |
| 21 May | 92.5700 | .. |
| 22 May | 91.6600 | .. |
| 23 May | 89.9000 | .. |
| 24 May | 90.6600 | .. |
| 25 May | 90.8600 | .. |
| 29 May | 90.7600 | .. |
| 30 May | 87.8200 | .. |
| 31 May | 86.5300 | .. |