| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all | 9964 | 
                                                                 
                                    
                                    21.7%
                                 
                                                             | 
                                                        
                    
| 2 | Very weak | 3268 | 
                                                                 
                                    
                                    7.1%
                                 
                                                             | 
                                                        
                    
| 3 | Weak | 8810 | 
                                                                 
                                    
                                    19.2%
                                 
                                                             | 
                                                        
                    
| 4 | Strong | 19460 | 
                                                                 
                                    
                                    42.4%
                                 
                                                             | 
                                                        
                    
| 5 | Very strong | 4427 | 
                                                                 
                                    
                                    9.6%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 24707 |