| Value | Category | Cases | |
|---|---|---|---|
| 1 | 553 | 
                                    
                                    7.3%
                                 | |
| 3 | 6990 | 
                                    
                                    92.4%
                                 | |
| 8 | 21 | 
                                    
                                    0.3%
                                 | |
| Sysmiss | 17380 |