| Value | Category | Cases | |
|---|---|---|---|
| 0 | 201 | 
                                    
                                    32.3%
                                 | |
| 1 | 362 | 
                                    
                                    58.2%
                                 | |
| 2 | 51 | 
                                    
                                    8.2%
                                 | |
| 3 | 7 | 
                                    
                                    1.1%
                                 | |
| 4 | 1 | 
                                    
                                    0.2%
                                 | |
| Sysmiss | 1329 |