| Day | Rate | Set date |
|---|---|---|
| 1 February | 20.3800 | .. |
| 4 February | 20.0700 | .. |
| 5 February | 20.0700 | .. |
| 6 February | 19.7800 | .. |
| 7 February | 19.6400 | .. |
| 8 February | 20.2600 | .. |
| 11 February | 21.4100 | .. |
| 12 February | 20.7300 | .. |
| 13 February | 21.1800 | .. |
| 14 February | 21.2300 | .. |
| 15 February | 21.5000 | .. |
| 19 February | 20.8800 | .. |
| 20 February | 20.2900 | .. |
| 21 February | 20.9500 | .. |
| 22 February | 21.0700 | .. |
| 25 February | 20.4800 | .. |
| 26 February | 21.4100 | .. |
| 27 February | 21.2900 | .. |
| 28 February | 21.7400 | .. |