| Value | Category | Cases | |
|---|---|---|---|
| 0 | 2 | 
                                    
                                    28.6%
                                 | |
| 1 | 1 | 
                                    
                                    14.3%
                                 | |
| 3 | 2 | 
                                    
                                    28.6%
                                 | |
| 15 | 2 | 
                                    
                                    28.6%
                                 | |
| Sysmiss | 416 |