| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 | 
                                                                 
                                    
                                    25%
                                 
                                                             | 
                                                        
                    |
| 20 | 1 | 
                                                                 
                                    
                                    25%
                                 
                                                             | 
                                                        
                    |
| 26 | 1 | 
                                                                 
                                    
                                    25%
                                 
                                                             | 
                                                        
                    |
| 72 | 1 | 
                                                                 
                                    
                                    25%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | don't know | 0 | |
| Sysmiss | refusal | 0 | |
| Sysmiss | 11 |