| Day | Rate | Set date |
|---|---|---|
| 3 August | 21.5800 | .. |
| 4 August | 21.3500 | .. |
| 5 August | 21.1800 | .. |
| 6 August | 21.4200 | .. |
| 7 August | 21.2200 | .. |
| 10 August | 21.0300 | .. |
| 11 August | 20.9100 | .. |
| 12 August | 21.0800 | .. |
| 13 August | 21.3400 | .. |
| 14 August | 21.2800 | .. |
| 17 August | 21.4500 | .. |
| 18 August | 21.4700 | .. |
| 19 August | 21.3700 | .. |
| 20 August | 21.4400 | .. |
| 21 August | 21.0800 | .. |
| 24 August | 21.5400 | .. |
| 25 August | 21.1500 | .. |
| 26 August | 21.2100 | .. |
| 27 August | 21.1300 | .. |
| 28 August | 21.3100 | .. |
| 31 August | 21.4800 | .. |