| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Manual | 944 | 2450 | 
                                                                 
                                    
                                    29%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 2 | Special tools | 20 | 23 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 3 | Both methods | 63 | 82 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                            
                        
                        
                            
                    
| Sysmiss | 1792 | 5893 |