| Day | Rate | Set date | 
|---|---|---|
| 2 January | 26.4400 | .. | 
| 3 January | 24.8900 | .. | 
| 4 January | 23.5600 | .. | 
| 7 January | 26.7900 | .. | 
| 8 January | 26.2400 | .. | 
| 9 January | 26.1500 | .. | 
| 10 January | 26.2500 | .. | 
| 11 January | 25.6700 | .. | 
| 14 January | 29.1700 | .. | 
| 15 January | 28.1900 | .. | 
| 16 January | 30.2000 | .. | 
| 17 January | 19.7000 | .. | 
| 18 January | 18.2000 | .. | 
| 21 January | 18.9700 | .. | 
| 22 January | 20.5000 | .. | 
| 23 January | 20.5600 | .. | 
| 24 January | 20.3700 | .. | 
| 25 January | 20.0000 | .. | 
| 28 January | 19.8700 | .. | 
| 29 January | 20.4700 | .. | 
| 30 January | 19.6100 | .. | 
| 31 January | 20.0600 | .. | 
| 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 | .. | 
| Day | Rate | Set date | 
|---|---|---|
| 1 March | 18.8900 | .. | 
| 4 March | 19.6300 | .. | 
| 5 March | 19.5000 | .. | 
| 6 March | 19.2200 | .. | 
| 7 March | 18.8900 | .. | 
| 8 March | 18.8100 | .. | 
| 11 March | 18.3700 | .. | 
| 12 March | 19.0300 | .. | 
| 13 March | 20.8100 | .. | 
| 14 March | 20.0300 | .. | 
| 15 March | 17.7300 | .. | 
| 18 March | 17.5300 | .. | 
| 19 March | 18.3800 | .. | 
| 20 March | 18.3400 | .. | 
| 21 March | 18.7000 | .. | 
| 22 March | 18.5700 | .. | 
| 25 March | 18.2500 | .. | 
| 26 March | 18.3900 | .. | 
| 27 March | 18.0400 | .. | 
| 28 March | 17.9500 | .. | 
| Day | Rate | Set date | 
|---|---|---|
| 2 April | 17.9900 | .. | 
| 3 April | 18.1100 | .. | 
| 4 April | 18.7300 | .. | 
| 5 April | 18.6100 | .. | 
| 8 April | 18.8100 | .. | 
| 9 April | 18.8100 | .. | 
| 10 April | 19.4100 | .. | 
| 11 April | 19.5500 | .. | 
| 12 April | 20.0200 | .. | 
| 15 April | 20.1700 | .. | 
| 16 April | 19.4400 | .. | 
| 17 April | 19.5200 | .. | 
| 18 April | 19.0200 | .. | 
| 19 April | 19.1400 | .. | 
| 22 April | 19.4800 | .. | 
| 23 April | 19.3200 | .. | 
| 24 April | 19.3300 | .. | 
| 25 April | 19.5400 | .. | 
| 26 April | 19.6100 | .. | 
| 29 April | 19.6100 | .. | 
| 30 April | 19.4200 | .. | 
| Day | Rate | Set date | 
|---|---|---|
| 1 May | 19.5700 | .. | 
| 2 May | 19.4500 | .. | 
| 3 May | 19.6600 | .. | 
| 7 May | 19.9900 | .. | 
| 8 May | 20.1400 | .. | 
| 9 May | 20.1400 | .. | 
| 10 May | 19.6000 | .. | 
| 13 May | 19.2900 | .. | 
| 14 May | 19.0600 | .. | 
| 15 May | 19.1500 | .. | 
| 16 May | 19.0600 | .. | 
| 17 May | 19.5800 | .. | 
| 20 May | 19.5700 | .. | 
| 21 May | 19.3300 | .. | 
| 22 May | 19.1300 | .. | 
| 23 May | 19.2000 | .. | 
| 24 May | 19.3500 | .. | 
| 28 May | 19.4300 | .. | 
| 29 May | 19.1600 | .. | 
| 30 May | 19.3100 | .. | 
| 31 May | 19.2100 | .. | 
| Day | Rate | Set date | 
|---|---|---|
| 3 June | 19.2300 | .. | 
| 4 June | 19.1200 | .. | 
| 5 June | 18.6500 | .. | 
| 6 June | 18.4900 | .. | 
| 7 June | 18.5000 | .. | 
| 10 June | 18.0400 | .. | 
| 11 June | 18.0700 | .. | 
| 12 June | 17.9900 | .. | 
| 13 June | 17.9600 | .. | 
| 14 June | 18.1400 | .. | 
| 17 June | 18.2100 | .. | 
| 18 June | 18.2100 | .. | 
| 19 June | 18.1800 | .. | 
| 20 June | 18.4400 | .. | 
| 21 June | 18.5400 | .. | 
| 24 June | 18.2600 | .. | 
| 25 June | 18.2500 | .. | 
| 26 June | 18.3300 | .. | 
| 27 June | 18.5600 | .. | 
| 28 June | 18.7200 | .. | 
| Day | Rate | Set date | 
|---|---|---|
| 1 July | 18.8100 | .. | 
| 2 July | 18.8400 | .. | 
| 3 July | 18.6700 | .. | 
| 4 July | 18.6900 | .. | 
| 5 July | 18.9200 | .. | 
| 8 July | 19.2300 | .. | 
| 9 July | 19.2500 | .. | 
| 10 July | 19.4300 | .. | 
| 11 July | 19.2500 | .. | 
| 12 July | 19.7400 | .. | 
| 15 July | 19.5300 | .. | 
| 16 July | 19.7500 | .. | 
| 17 July | 20.2100 | .. | 
| 18 July | 19.8900 | .. | 
| 19 July | 20.2100 | .. | 
| 22 July | 19.9800 | .. | 
| 23 July | 19.5000 | .. | 
| 24 July | 19.6900 | .. | 
| 25 July | 19.5500 | .. | 
| 26 July | 19.6200 | .. | 
| 29 July | 19.5700 | .. | 
| 30 July | 19.5300 | .. | 
| 31 July | 19.7400 | .. | 
| Day | Rate | Set date | 
|---|---|---|
| 1 August | 19.4000 | .. | 
| 2 August | 19.5000 | .. | 
| 5 August | 19.5300 | .. | 
| 6 August | 19.4300 | .. | 
| 7 August | 19.4300 | .. | 
| 8 August | 19.6200 | .. | 
| 9 August | 19.6000 | .. | 
| 12 August | 19.6200 | .. | 
| 13 August | 19.5000 | .. | 
| 14 August | 19.2700 | .. | 
| 15 August | 19.3100 | .. | 
| 16 August | 19.4800 | .. | 
| 19 August | 20.5300 | .. | 
| 20 August | 20.6500 | .. | 
| 21 August | 19.6400 | .. | 
| 22 August | 19.7900 | .. | 
| 23 August | 19.9800 | .. | 
| 27 August | 20.1100 | .. | 
| 28 August | 20.0300 | .. | 
| 29 August | 20.3200 | .. | 
| 30 August | 20.7000 | .. | 
| Day | Rate | Set date | 
|---|---|---|
| 2 September | 20.6300 | .. | 
| 3 September | 20.5800 | .. | 
| 4 September | 20.2500 | .. | 
| 5 September | 20.1300 | .. | 
| 6 September | 20.0700 | .. | 
| 9 September | 19.8400 | .. | 
| 10 September | 19.9500 | .. | 
| 11 September | 20.1600 | .. | 
| 12 September | 20.1400 | .. | 
| 13 September | 20.3200 | .. | 
| 16 September | 20.4200 | .. | 
| 17 September | 20.2300 | .. | 
| 18 September | 20.4100 | .. | 
| 19 September | 20.2700 | .. | 
| 20 September | 20.4400 | .. | 
| 23 September | 20.6200 | .. | 
| 24 September | 20.7500 | .. | 
| 25 September | 20.7300 | .. | 
| 26 September | 20.8800 | .. | 
| 27 September | 21.1700 | .. | 
| 30 September | 21.0500 | .. | 
| Day | Rate | Set date | 
|---|---|---|
| 1 October | 20.9900 | .. | 
| 2 October | 21.1500 | .. | 
| 3 October | 21.5600 | .. | 
| 4 October | 21.4400 | .. | 
| 7 October | 21.6800 | .. | 
| 8 October | 21.7400 | .. | 
| 9 October | 22.1000 | .. | 
| 10 October | 21.8500 | .. | 
| 11 October | 22.0400 | .. | 
| 14 October | 22.4200 | .. | 
| 15 October | 22.8100 | .. | 
| 16 October | 22.1700 | .. | 
| 17 October | 22.4200 | .. | 
| 18 October | 22.5900 | .. | 
| 21 October | 22.6700 | .. | 
| 22 October | 22.4200 | .. | 
| 23 October | 21.9700 | .. | 
| 24 October | 22.1000 | .. | 
| 25 October | 21.7900 | .. | 
| 28 October | 21.7900 | .. | 
| 29 October | 21.7200 | .. | 
| 30 October | 21.7600 | .. | 
| 31 October | 22.1000 | .. | 
| Day | Rate | Set date | 
|---|---|---|
| 1 November | 22.5100 | .. | 
| 4 November | 22.3800 | .. | 
| 5 November | 22.4100 | .. | 
| 6 November | 22.0500 | .. | 
| 7 November | 21.9700 | .. | 
| 8 November | 21.8400 | .. | 
| 11 November | 21.4800 | .. | 
| 12 November | 21.2700 | .. | 
| 13 November | 21.2800 | .. | 
| 14 November | 21.0300 | .. | 
| 15 November | 21.5900 | .. | 
| 18 November | 21.1600 | .. | 
| 19 November | 20.8500 | .. | 
| 20 November | 20.7100 | .. | 
| 21 November | 20.5400 | .. | 
| 22 November | 19.9600 | .. | 
| 25 November | 20.0500 | .. | 
| 26 November | 19.6300 | .. | 
| 27 November | 19.9700 | .. | 
| 28 November | 20.1900 | .. | 
| 29 November | 20.1300 | .. | 
| Day | Rate | Set date | 
|---|---|---|
| 2 December | 19.7300 | .. | 
| 3 December | 19.2200 | .. | 
| 4 December | 19.3900 | .. | 
| 5 December | 19.1300 | .. | 
| 6 December | 18.8800 | .. | 
| 9 December | 18.0100 | .. | 
| 10 December | 18.1600 | .. | 
| 11 December | 18.2300 | .. | 
| 12 December | 18.5800 | .. | 
| 13 December | 18.8100 | .. | 
| 16 December | 18.5800 | .. | 
| 17 December | 18.0600 | .. | 
| 18 December | 18.0200 | .. | 
| 19 December | 17.8900 | .. | 
| 20 December | 17.4000 | .. | 
| 23 December | 17.6500 | .. | 
| 24 December | 17.8300 | .. | 
| 27 December | 17.6800 | .. | 
| 30 December | 17.7200 | .. | 
| 31 December | 17.6100 | .. |