| Day | Rate | Set date |
|---|---|---|
| 2 January | 19.8100 | .. |
| 3 January | 19.8900 | .. |
| 4 January | 19.9100 | .. |
| 5 January | 20.2600 | .. |
| 9 January | 19.9500 | .. |
| 10 January | 19.6700 | .. |
| 11 January | 18.7900 | .. |
| 12 January | 18.2500 | .. |
| 15 January | 18.3800 | .. |
| 16 January | 18.0500 | .. |
| 17 January | 18.5200 | .. |
| 18 January | 19.1800 | .. |
| 19 January | 18.9400 | .. |
| 22 January | 18.6200 | .. |
| 23 January | 18.0600 | .. |
| 24 January | 18.2800 | .. |
| 25 January | 17.6700 | .. |
| 26 January | 17.7300 | .. |
| 29 January | 17.4500 | .. |
| 30 January | 17.5600 | .. |
| 31 January | 17.7400 | .. |