| Day | Rate | Set date |
|---|---|---|
| 1 May | 64.4000 | .. |
| 2 May | 63.6800 | .. |
| 3 May | 63.1900 | .. |
| 4 May | 61.9300 | .. |
| 7 May | 61.4700 | .. |
| 8 May | 62.2600 | .. |
| 9 May | 61.5500 | .. |
| 10 May | 61.8100 | .. |
| 11 May | 62.3700 | .. |
| 14 May | 62.4600 | .. |
| 15 May | 63.1700 | .. |
| 16 May | 62.5500 | .. |
| 17 May | 64.8600 | .. |
| 18 May | 64.9400 | .. |
| 21 May | 66.2700 | .. |
| 22 May | 64.9700 | .. |
| 23 May | 65.7700 | .. |
| 24 May | 64.1800 | .. |
| 25 May | 65.2000 | .. |
| 29 May | 63.1500 | .. |
| 30 May | 63.4900 | .. |
| 31 May | 64.0100 | .. |