| Day | Rate | Set date |
|---|---|---|
| 3 August | 20.2100 | .. |
| 4 August | 19.9900 | .. |
| 5 August | 19.8400 | .. |
| 6 August | 20.0300 | .. |
| 7 August | 19.8600 | .. |
| 10 August | 19.6900 | .. |
| 11 August | 19.5900 | .. |
| 12 August | 19.7200 | .. |
| 13 August | 20.0300 | .. |
| 14 August | 20.0000 | .. |
| 17 August | 20.0500 | .. |
| 18 August | 20.0000 | .. |
| 19 August | 19.8600 | .. |
| 20 August | 19.8200 | .. |
| 21 August | 19.6800 | .. |
| 24 August | 20.0400 | .. |
| 25 August | 19.7500 | .. |
| 26 August | 19.7400 | .. |
| 27 August | 19.7200 | .. |
| 28 August | 19.8700 | .. |