| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very great extent | 879 | 
                                                                 
                                    
                                    28.2%
                                 
                                                             | 
                                                        
                    
| 2 | Great extent | 1338 | 
                                                                 
                                    
                                    42.9%
                                 
                                                             | 
                                                        
                    
| 3 | Neither great nor small extent | 539 | 
                                                                 
                                    
                                    17.3%
                                 
                                                             | 
                                                        
                    
| 4 | Small extent | 292 | 
                                                                 
                                    
                                    9.4%
                                 
                                                             | 
                                                        
                    
| 5 | Very small extent | 69 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 3101 |