| Day | Rate | Set date |
|---|---|---|
| 2 August | 19.4100 | .. |
| 3 August | 19.4000 | .. |
| 4 August | 19.6300 | .. |
| 5 August | 19.8000 | .. |
| 6 August | 20.0600 | .. |
| 9 August | 20.5000 | .. |
| 10 August | 20.4900 | .. |
| 11 August | 20.6300 | .. |
| 12 August | 20.4900 | .. |
| 13 August | 20.6900 | .. |
| 16 August | 20.8400 | .. |
| 17 August | 20.7400 | .. |
| 18 August | 20.5700 | .. |
| 19 August | 20.9000 | .. |
| 20 August | 20.9900 | .. |
| 23 August | 20.9800 | .. |
| 24 August | 20.6300 | .. |
| 25 August | 19.7800 | .. |
| 26 August | 20.5700 | .. |
| 27 August | 20.7600 | .. |
| 31 August | 21.3300 | .. |