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| Mains Gas | Heating Oil | Electricity | Solid Fuel | LPG | |
| 1700-1977 | 38 | 41 | 13 | 7 | 1 |
| 1978-1999 | 33 | 44 | 16 | 5 | 1 |
| 2000-2004 | 40 | 36 | 20 | 2 | 1 |
| 2005-2009 | 43 | 32 | 20 | 2 | 3 |
| 2010-2014 | 42 | 34 | 21 | 1 | 2 |
| 2015-2019 | 44 | 5 | 50 | 0 | 1 |
| 2020-2024 | 7 | 0 | 92 | 0 | 0 |
| 2025-2029 | 2 | 0 | 98 | 0 | 0 |