2007 Historical Data
| 11 December | 45.70% |
| 4 December | 45.61% |
| 20 November | 47.13% |
| 13 November | 46.71% |
| 6 November | 46.35% |
| 30 October | 46.44% |
| 23 October | 46.37% |
| 17 October | 46.52% |
| 9 October | 45.23% |
| 2 October | 44.91% |
| 25 September | 44.55% |
| 4 September | 43.63% |
| 21 August | 42.70% |
| 31 July | 43.45% |
| 24 July | 42.21% |
| 17 July | 42.46% |
| 26 June | 41.92% |
| 16 January | 44.70% |
