| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 13951 | 
                                                                 
                                    
                                    95%
                                 
                                                             | 
                                                        
                    
| 2 | SOME DIFFICULTY | 432 | 
                                                                 
                                    
                                    2.9%
                                 
                                                             | 
                                                        
                    
| 3 | A LOT OF DIFFICULTY | 56 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    
| 4 | CANNOT BE UNDERSTOOD AT ALL | 45 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| 9 | NO RESPONSE | 1 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 205 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             |