| Value | Category | Cases | |
|---|---|---|---|
| 10 | 3 | 
                                    
                                    4.1%
                                 | |
| 15 | 6 | 
                                    
                                    8.2%
                                 | |
| 20 | 63 | 
                                    
                                    86.3%
                                 | |
| 25 | 1 | 
                                    
                                    1.4%
                                 | |
| Sysmiss | 976 |