2004 Historical Data
| 21 December | 49.51% |
| 14 December | 49.23% |
| 30 November | 49.98% |
| 22 November | 51.16% |
| 16 November | 51.08% |
| 9 November | 51.00% |
| 2 November | 50.84% |
| 26 October | 54.80% |
| 19 October | 53.09% |
| 12 October | 53.63% |
| 5 October | 51.77% |
| 21 September | 50.29% |
| 14 September | 50.23% |
| 31 August | 49.50% |
| 24 August | 49.56% |
| 27 July | 48.86% |
| 20 July | 48.26% |
| 13 July | 48.21% |
| 6 July | 48.17% |
| 29 June | 50.00% |
| 22 June | 50.33% |
| 8 June | 48.00% |
| 1 June | 47.56% |
| 25 May | 47.19% |
| 11 May | 49.93% |
| 4 May | 50.56% |
| 27 April | 50.23% |
| 20 April | 53.00% |
| 13 April | 53.09% |
| 6 April | 49.14% |
| 30 March | 48.59% |
| 23 March | 50.07% |
| 16 March | 48.91% |
| 9 March | 47.28% |
| 2 March | 46.64% |
| 24 February | 46.26% |
| 3 February | 45.55% |
| 13 January | 46.87% |
| 6 January | 47.00% |
