| Value | Category | Cases | |
|---|---|---|---|
| 0 | 51 | 
                                    
                                    81%
                                 | |
| 1 | 8 | 
                                    
                                    12.7%
                                 | |
| 2 | 3 | 
                                    
                                    4.8%
                                 | |
| 3 | 1 | 
                                    
                                    1.6%
                                 | |
| Sysmiss | 9 |