| Value | Category | Cases | |
|---|---|---|---|
| 1 | Charcoal | 322 |
15.9%
|
| 2 | Wood | 878 |
43.5%
|
| 3 | Oil | 791 |
39.2%
|
| 4 | Gas | 19 |
0.9%
|
| 5 | Electricity | 3 |
0.1%
|
| 555 | Other | 6 |
0.3%
|
| Sysmiss | 377 |