| Value | Category | Cases | |
|---|---|---|---|
| 0 | 13 | 
                                    
                                    52%
                                 | |
| 1 | 5 | 
                                    
                                    20%
                                 | |
| 2 | 6 | 
                                    
                                    24%
                                 | |
| 4 | 1 | 
                                    
                                    4%
                                 | |
| Sysmiss | 15203 |