| Day | Rate | Set date |
|---|---|---|
| 3 July | 17.5800 | .. |
| 4 July | 17.8600 | .. |
| 5 July | 18.0700 | .. |
| 6 July | 18.2000 | .. |
| 7 July | 17.5000 | .. |
| 10 July | 17.6000 | .. |
| 11 July | 17.1300 | .. |
| 12 July | 17.1600 | .. |
| 13 July | 17.0000 | .. |
| 14 July | 17.2500 | .. |
| 17 July | 17.2700 | .. |
| 18 July | 17.5500 | .. |
| 19 July | 17.3500 | .. |
| 20 July | 17.3000 | .. |
| 21 July | 17.5200 | .. |
| 24 July | 17.3100 | .. |
| 25 July | 16.8500 | .. |
| 26 July | 16.7200 | .. |
| 27 July | 16.5600 | .. |
| 28 July | 16.6500 | .. |
| 31 July | 16.5200 | .. |