| Day | Rate | Set date |
|---|---|---|
| 1 August | 67.6600 | .. |
| 2 August | 68.9600 | .. |
| 3 August | 68.4900 | .. |
| 6 August | 69.0100 | .. |
| 7 August | 69.1700 | .. |
| 8 August | 66.9400 | .. |
| 9 August | 66.8100 | .. |
| 10 August | 67.6300 | .. |
| 13 August | 67.2000 | .. |
| 14 August | 67.0400 | .. |
| 15 August | 65.0100 | .. |
| 16 August | 65.4600 | .. |
| 17 August | 65.9100 | .. |
| 20 August | 66.4300 | .. |
| 21 August | 67.3500 | .. |
| 22 August | 67.8600 | .. |
| 23 August | 67.8300 | .. |
| 24 August | 68.7200 | .. |
| 27 August | 68.8700 | .. |
| 28 August | 68.5300 | .. |
| 29 August | 69.5100 | .. |
| 30 August | 70.2500 | .. |
| 31 August | 69.8000 | .. |