| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not familiar at all | 1 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    
| 2 | 1 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    |
| 3 | 3 | 
                                                                 
                                    
                                    3.6%
                                 
                                                             | 
                                                        
                    |
| 4 | 9 | 
                                                                 
                                    
                                    10.8%
                                 
                                                             | 
                                                        
                    |
| 5 | 8 | 
                                                                 
                                    
                                    9.6%
                                 
                                                             | 
                                                        
                    |
| 6 | 9 | 
                                                                 
                                    
                                    10.8%
                                 
                                                             | 
                                                        
                    |
| 7 | 13 | 
                                                                 
                                    
                                    15.7%
                                 
                                                             | 
                                                        
                    |
| 8 | 18 | 
                                                                 
                                    
                                    21.7%
                                 
                                                             | 
                                                        
                    |
| 9 | 7 | 
                                                                 
                                    
                                    8.4%
                                 
                                                             | 
                                                        
                    |
| 10 | Extremely familiar | 14 | 
                                                                 
                                    
                                    16.9%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 13 |