| Total | Central water heating system | | 42.0 | 41.2 | 41.2 | 42.7 | 41.1 | 43.0 | 43.6 | 45.2 |
| Local water heating system | | 29.9 | 32.8 | 34.2 | 34.4 | 36.8 | 37.6 | 37.9 | 38.9 |
| No hot water available | | 28.1 | 26.0 | 24.6 | 22.9 | 22.1 | 19.4 | 18.5 | 15.9 |
| Working | Central water heating system | | 45.6 | 45.3 | 45.0 | 45.9 | 43.9 | 46.8 | 46.2 | 48.2 |
| Local water heating system | | 34.1 | 37.5 | 39.1 | 39.5 | 41.1 | 40.5 | 42.3 | 42.5 |
| No hot water available | | 20.3 | 17.2 | 15.9 | 14.6 | 15.0 | 12.7 | 11.4 | 9.3 |
| ..one member working | Central water heating system | | 45.8 | 45.2 | 42.9 | 48.2 | 44.8 | 49.1 | 46.6 | 50.3 |
| Local water heating system | | 30.6 | 33.0 | 36.7 | 33.9 | 36.5 | 34.5 | 37.4 | 38.7 |
| No hot water available | | 23.6 | 21.8 | 20.4 | 17.9 | 18.7 | 16.4 | 16.0 | 11.0 |
| ..two or more members working | Central water heating system | | 45.4 | 45.5 | 47.2 | 43.2 | 42.9 | 44.4 | 45.9 | 45.9 |
| Local water heating system | | 38.5 | 42.5 | 41.7 | 45.8 | 46.0 | 47.0 | 47.2 | 46.6 |
| No hot water available | | 16.1 | 12.0 | 11.1 | 11.0 | 11.1 | 8.6 | 6.8 | 7.5 |
| Unemployed | Central water heating system | | 35.7 | 33.6 | 33.8 | 39.6 | 34.0 | 30.1 | 28.9 | .. |
| Local water heating system | | 23.8 | 22.7 | 25.0 | 28.8 | 27.2 | 31.3 | 21.9 | .. |
| No hot water available | | 40.5 | 43.7 | 41.2 | 31.6 | 38.8 | 38.6 | 49.2 | .. |
| Retired | Central water heating system | | 35.0 | 33.8 | 34.4 | 34.7 | 35.7 | 35.5 | 39.9 | 39.3 |
| Local water heating system | | 22.2 | 24.8 | 26.6 | 25.8 | 29.9 | 33.9 | 29.8 | 31.7 |
| No hot water available | | 42.8 | 41.4 | 39.0 | 39.5 | 34.4 | 30.5 | 30.3 | 29.0 |
| Other inactive | Central water heating system | | 33.9 | 32.6 | 33.5 | 44.4 | 36.1 | 35.6 | 29.4 | 29.4 |
| Local water heating system | | 17.9 | 22.8 | 18.6 | .. | 21.7 | 19.4 | 21.5 | 25.2 |
| No hot water available | | 48.2 | 44.6 | 47.9 | 41.6 | 42.2 | 45.0 | 49.0 | 45.4 |