| Value | Category | Cases | |
|---|---|---|---|
| 1 | Free | 56 | 
                                    
                                    33.9%
                                 | 
| 2 | Partly free | 54 | 
                                    
                                    32.7%
                                 | 
| 3 | Not free | 55 | 
                                    
                                    33.3%
                                 | 
| Sysmiss | 39 |