| Day | Rate | Set date |
|---|---|---|
| 1 July | 20.1200 | .. |
| 2 July | 20.3400 | .. |
| 3 July | 19.5600 | .. |
| 7 July | 19.5200 | .. |
| 8 July | 19.7300 | .. |
| 9 July | 19.4600 | .. |
| 10 July | 19.2200 | .. |
| 11 July | 19.3300 | .. |
| 14 July | 18.9900 | .. |
| 15 July | 19.6700 | .. |
| 16 July | 19.6500 | .. |
| 17 July | 19.9900 | .. |
| 18 July | 19.2700 | .. |
| 21 July | 19.1800 | .. |
| 22 July | 19.0800 | .. |
| 23 July | 19.6300 | .. |
| 24 July | 19.7700 | .. |
| 25 July | 19.8900 | .. |
| 28 July | 19.8100 | .. |
| 29 July | 19.8500 | .. |
| 30 July | 20.3000 | .. |
| 31 July | 20.1400 | .. |