| Value | Category | Cases | |
|---|---|---|---|
| 1 | Animal dung | 222 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 2 | Coal | 2908 | 
                                                                 
                                    
                                    2.4%
                                 
                                                             | 
                                                        
                    
| 3 | Electricity | 75729 | 
                                                                 
                                    
                                    62%
                                 
                                                             | 
                                                        
                    
| 4 | Gas | 1344 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    
| 5 | Other | 9163 | 
                                                                 
                                    
                                    7.5%
                                 
                                                             | 
                                                        
                    
| 6 | Paraffin | 7049 | 
                                                                 
                                    
                                    5.8%
                                 
                                                             | 
                                                        
                    
| 7 | Wood/straw | 25691 | 
                                                                 
                                    
                                    21%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 2366 |