| Day | Rate | Set date |
|---|---|---|
| 2 January | 18.1300 | .. |
| 5 January | 17.9500 | .. |
| 6 January | 18.2200 | .. |
| 7 January | 18.2500 | .. |
| 8 January | 18.5700 | .. |
| 9 January | 18.7700 | .. |
| 12 January | 19.0100 | .. |
| 13 January | 18.8900 | .. |
| 14 January | 19.1300 | .. |
| 15 January | 19.1400 | .. |
| 16 January | 19.1000 | .. |
| 19 January | 18.7000 | .. |
| 20 January | 18.7200 | .. |
| 21 January | 18.6900 | .. |
| 22 January | 18.8700 | .. |
| 23 January | 18.7600 | .. |
| 26 January | 18.6400 | .. |
| 27 January | 18.4700 | .. |
| 28 January | 18.5800 | .. |
| 29 January | 18.6600 | .. |
| 30 January | 18.7500 | .. |