| Value | Category | Cases | |
|---|---|---|---|
| 1 | No never | 6902 | 
                                                                 
                                    
                                    87.3%
                                 
                                                             | 
                                                        
                    
| 2 | Not more than usual | 666 | 
                                                                 
                                    
                                    8.4%
                                 
                                                             | 
                                                        
                    
| 3 | More than usual | 289 | 
                                                                 
                                    
                                    3.7%
                                 
                                                             | 
                                                        
                    
| 4 | Much more than usual | 48 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 4 |