| Day | Rate | Set date |
|---|---|---|
| 2 January | 21.0000 | .. |
| 3 January | 20.6600 | .. |
| 4 January | 22.1800 | .. |
| 7 January | 22.0300 | .. |
| 8 January | 22.0200 | .. |
| 9 January | 20.8900 | .. |
| 10 January | 21.2900 | .. |
| 11 January | 20.8600 | .. |
| 14 January | 19.7800 | .. |
| 15 January | 19.7000 | .. |
| 16 January | 19.3600 | .. |
| 17 January | 18.4100 | .. |
| 18 January | 18.4500 | .. |
| 21 January | 18.5700 | .. |
| 22 January | 18.7500 | .. |
| 23 January | 19.1900 | .. |
| 24 January | 19.1300 | .. |
| 25 January | 19.3700 | .. |
| 28 January | 19.6500 | .. |
| 29 January | 19.2400 | .. |
| 30 January | 18.7900 | .. |
| 31 January | 19.1800 | .. |