| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not familiar at all | 6 | 
                                    
                                    1%
                                 | 
| 2 | 3 | 
                                    
                                    0.5%
                                 | |
| 3 | 15 | 
                                    
                                    2.5%
                                 | |
| 4 | 23 | 
                                    
                                    3.8%
                                 | |
| 5 | 81 | 
                                    
                                    13.2%
                                 | |
| 6 | 91 | 
                                    
                                    14.9%
                                 | |
| 7 | 114 | 
                                    
                                    18.6%
                                 | |
| 8 | 84 | 
                                    
                                    13.7%
                                 | |
| 9 | 86 | 
                                    
                                    14.1%
                                 | |
| 10 | Very familiar | 109 | 
                                    
                                    17.8%
                                 | 
| Sysmiss | 12 |