| Day | Rate | Set date |
|---|---|---|
| 1 September | 19.6300 | .. |
| 2 September | 19.6400 | .. |
| 3 September | 19.5000 | .. |
| 4 September | 19.3200 | .. |
| 8 September | 18.9400 | .. |
| 9 September | 19.3800 | .. |
| 10 September | 19.6700 | .. |
| 11 September | 19.4000 | .. |
| 14 September | 19.6100 | .. |
| 15 September | 19.7000 | .. |
| 16 September | 19.7300 | .. |
| 17 September | 19.5600 | .. |
| 18 September | 19.5500 | .. |
| 21 September | 19.7300 | .. |
| 22 September | 19.2500 | .. |
| 23 September | 19.6800 | .. |
| 24 September | 19.6500 | .. |
| 25 September | 19.4600 | .. |
| 28 September | 19.4500 | .. |
| 29 September | 19.5400 | .. |
| 30 September | 19.5900 | .. |