| Value | Category | Cases | |
|---|---|---|---|
| 0 | 17 | 
                                    
                                    5%
                                 | |
| 1 | 278 | 
                                    
                                    82.5%
                                 | |
| 2 | 34 | 
                                    
                                    10.1%
                                 | |
| 3 | 8 | 
                                    
                                    2.4%
                                 | |
| Sysmiss | 2360 |