| Value | Category | Cases | |
|---|---|---|---|
| 0 | 468 | 
                                    
                                    69.4%
                                 | |
| 1 | 184 | 
                                    
                                    27.3%
                                 | |
| 2 | 17 | 
                                    
                                    2.5%
                                 | |
| 3 | 2 | 
                                    
                                    0.3%
                                 | |
| 4 | 2 | 
                                    
                                    0.3%
                                 | |
| 8 | 1 | 
                                    
                                    0.1%
                                 | |
| Sysmiss | 19582 |