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| Con | Alan | Mike | Geoff | Dave | Steve | Tony | Tom | |
| January | 8.4 | 9.9 | 11.3 | 13.2 | 12.1 | 14.3 | 14.4 | 15.5 |
| February | 8.6 | 9.7 | 11.5 | 13.4 | 12.1 | 12.8 | 14.5 | 15.7 |
| March | 9.0 | 9.3 | 11.3 | 11.1 | 12.4 | 13.2 | 13.7 | 14.3 |
| April | 9.3 | 9.6 | 11.4 | 11.3 | 12.2 | 13.0 | 13.6 | 14.6 |
| May | 9.4 | 9.7 | 10.6 | 11.3 | 12.3 | 13.0 | 12.4 | 14.6 |
| June | ||||||||
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| August | ||||||||
| September | ||||||||
| Ocotber | ||||||||
| November | ||||||||
| December | ||||||||
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