| Value | Category | Cases | |
|---|---|---|---|
| 1 | Animal dung | 153 |
0.1%
|
| 2 | Coal | 1556 |
1.3%
|
| 3 | Electricity | 91087 |
73.7%
|
| 4 | Gas | 3384 |
2.7%
|
| 5 | Other | 497 |
0.4%
|
| 6 | Paraffin | 7358 |
6%
|
| 7 | Wood/straw | 19627 |
15.9%
|
| Sysmiss | 810 |