| Value | Category | Cases | |
|---|---|---|---|
| 1 | paraffin | 9373 |
87.6%
|
| 2 | gas | 69 |
0.6%
|
| 3 | electricity | 616 |
5.8%
|
| 4 | other | 632 |
5.9%
|
| 9 | no response | 7 |
0.1%
|
| Sysmiss | 1 |