| Day | Rate | Set date |
|---|---|---|
| 2 July | 16.7200 | .. |
| 3 July | 16.8000 | .. |
| 5 July | 16.5000 | .. |
| 6 July | 16.4700 | .. |
| 9 July | 16.5800 | .. |
| 10 July | 16.9400 | .. |
| 11 July | 17.4700 | .. |
| 12 July | 18.4600 | .. |
| 13 July | 18.3600 | .. |
| 16 July | 18.6700 | .. |
| 17 July | 18.6500 | .. |
| 18 July | 18.5500 | .. |
| 19 July | 18.9900 | .. |
| 20 July | 19.6100 | .. |
| 23 July | 20.5000 | .. |
| 24 July | 20.5600 | .. |
| 25 July | 20.3800 | .. |
| 26 July | 20.3000 | .. |
| 27 July | 20.0400 | .. |
| 30 July | 20.2100 | .. |
| 31 July | 20.6900 | .. |