| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1404 | 
                                    
                                    87.4%
                                 | |
| 1 | 18 | 
                                    
                                    1.1%
                                 | |
| 2 | 56 | 
                                    
                                    3.5%
                                 | |
| 3 | 129 | 
                                    
                                    8%
                                 | |
| Sysmiss | 7868 |