| Day | Rate | Set date |
|---|---|---|
| 1 February | 19.8200 | .. |
| 4 February | 19.7700 | .. |
| 5 February | 19.6900 | .. |
| 6 February | 20.1600 | .. |
| 7 February | 20.1800 | .. |
| 8 February | 19.9800 | .. |
| 11 February | 20.5100 | .. |
| 12 February | 20.6100 | .. |
| 13 February | 20.0900 | .. |
| 14 February | 18.7900 | .. |
| 15 February | 17.0400 | .. |
| 18 February | 16.5000 | .. |
| 19 February | 16.7900 | .. |
| 20 February | 17.4400 | .. |
| 21 February | 16.8500 | .. |
| 22 February | 16.6200 | .. |
| 25 February | 16.8900 | .. |
| 26 February | 17.2300 | .. |
| 27 February | 17.9300 | .. |
| 28 February | 18.6800 | .. |