| Day | Rate | Set date |
|---|---|---|
| 3 May | 67.5600 | .. |
| 4 May | 68.8800 | .. |
| 5 May | 68.9600 | .. |
| 6 May | 68.0900 | .. |
| 7 May | 68.2800 | .. |
| 10 May | 68.3200 | .. |
| 11 May | 68.5500 | .. |
| 12 May | 69.3200 | .. |
| 13 May | 67.0500 | .. |
| 14 May | 68.7100 | .. |
| 17 May | 69.4600 | .. |
| 18 May | 68.7100 | .. |
| 19 May | 66.6600 | .. |
| 20 May | 65.1100 | .. |
| 21 May | 66.4400 | .. |
| 24 May | 68.4600 | .. |
| 25 May | 68.6500 | .. |
| 26 May | 68.8700 | .. |
| 27 May | 69.4600 | .. |
| 28 May | 69.6300 | .. |
| 31 May | 69.3200 | .. |