| Value | Category | Cases | |
|---|---|---|---|
| 1 | Electricity | 45 |
0.2%
|
| 2 | Gas | 121 |
0.6%
|
| 3 | Kerosene | 3847 |
18.5%
|
| 4 | Wood | 16588 |
79.6%
|
| 5 | Coal | 227 |
1.1%
|
| . | 5 |