| Value | Category | Cases | |
|---|---|---|---|
| 0 | never | 2836 | 
                                                                 
                                    
                                    19%
                                 
                                                             | 
                                                        
                    
| 1 | 2003 | 
                                                                 
                                    
                                    13.4%
                                 
                                                             | 
                                                        
                    |
| 2 | 2007 | 
                                                                 
                                    
                                    13.4%
                                 
                                                             | 
                                                        
                    |
| 3 | 1149 | 
                                                                 
                                    
                                    7.7%
                                 
                                                             | 
                                                        
                    |
| 4 | 650 | 
                                                                 
                                    
                                    4.3%
                                 
                                                             | 
                                                        
                    |
| 5 | 644 | 
                                                                 
                                    
                                    4.3%
                                 
                                                             | 
                                                        
                    |
| 6 | 294 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 7 | 231 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    |
| 8 | 152 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 9 | 27 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 10 | always | 44 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| -8 | other error | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| -7 | filter error | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| -3 | inapplicable | 4917 | 
                                                                 
                                    
                                    32.9%
                                 
                                                             | 
                                                        
                    
| -2 | no answer | 3 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| -1 | does not know | 4 | 
                                                                 
                                    
                                    0%
                                 
                                                             |