| Day | Rate | Set date |
|---|---|---|
| 3 February | 22.5400 | .. |
| 4 February | 22.4300 | .. |
| 5 February | 22.4700 | .. |
| 6 February | 21.6900 | .. |
| 7 February | 20.9500 | .. |
| 10 February | 21.1300 | .. |
| 11 February | 21.1400 | .. |
| 12 February | 20.5200 | .. |
| 13 February | 20.4900 | .. |
| 14 February | 20.4900 | .. |
| 17 February | 20.3400 | .. |
| 18 February | 20.3900 | .. |
| 19 February | 20.6300 | .. |
| 20 February | 20.0800 | .. |
| 21 February | 19.7900 | .. |
| 24 February | 19.1200 | .. |
| 25 February | 19.4500 | .. |
| 26 February | 19.5800 | .. |
| 27 February | 19.3500 | .. |
| 28 February | 18.8500 | .. |