| Value | Category | Cases | |
|---|---|---|---|
| 0 | 6 | 
                                    
                                    31.6%
                                 | |
| 1 | 8 | 
                                    
                                    42.1%
                                 | |
| 2 | 2 | 
                                    
                                    10.5%
                                 | |
| 3 | 3 | 
                                    
                                    15.8%
                                 | |
| Sysmiss | 1481 |