| Value | Category | Cases | |
|---|---|---|---|
| 1 | Easily | 2948 | 
                                    
                                    47.3%
                                 | 
| 3 | Difficultly | 2019 | 
                                    
                                    32.4%
                                 | 
| 5 | Could not do it | 1271 | 
                                    
                                    20.4%
                                 | 
| Sysmiss | 18689 |