| Value | Category | Cases | |
|---|---|---|---|
| 0 | never | 988 | 
                                                                 
                                    
                                    6.6%
                                 
                                                             | 
                                                        
                    
| 1 | 1649 | 
                                                                 
                                    
                                    11%
                                 
                                                             | 
                                                        
                    |
| 2 | 2235 | 
                                                                 
                                    
                                    14.9%
                                 
                                                             | 
                                                        
                    |
| 3 | 1551 | 
                                                                 
                                    
                                    10.4%
                                 
                                                             | 
                                                        
                    |
| 4 | 1011 | 
                                                                 
                                    
                                    6.8%
                                 
                                                             | 
                                                        
                    |
| 5 | 1119 | 
                                                                 
                                    
                                    7.5%
                                 
                                                             | 
                                                        
                    |
| 6 | 580 | 
                                                                 
                                    
                                    3.9%
                                 
                                                             | 
                                                        
                    |
| 7 | 444 | 
                                                                 
                                    
                                    3%
                                 
                                                             | 
                                                        
                    |
| 8 | 327 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    |
| 9 | 77 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 10 | always | 58 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    
| -8 | other error | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| -7 | filter error | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| -3 | inapplicable | 4909 | 
                                                                 
                                    
                                    32.8%
                                 
                                                             | 
                                                        
                    
| -2 | no answer | 5 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| -1 | does not know | 8 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             |