| Day | Rate | Set date |
|---|---|---|
| 1 July | 20.6000 | .. |
| 2 July | 20.7500 | .. |
| 3 July | 20.8000 | .. |
| 6 July | 20.5700 | .. |
| 7 July | 20.0400 | .. |
| 8 July | 20.0000 | .. |
| 9 July | 19.9800 | .. |
| 10 July | 19.8600 | .. |
| 13 July | 19.9700 | .. |
| 14 July | 20.0700 | .. |
| 15 July | 20.2100 | .. |
| 16 July | 20.3100 | .. |
| 17 July | 20.1300 | .. |
| 20 July | 20.2400 | .. |
| 21 July | 20.2100 | .. |
| 22 July | 20.4400 | .. |
| 23 July | 20.6000 | .. |
| 24 July | 20.7100 | .. |
| 27 July | 20.7300 | .. |
| 28 July | 20.7200 | .. |
| 29 July | 20.6600 | .. |
| 30 July | 20.4600 | .. |
| 31 July | 20.4700 | .. |