| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 not used at all | 746 | 
                                                                 
                                    
                                    49.1%
                                 
                                                             | 
                                                        
                    
| 1 | 1 | 45 | 
                                                                 
                                    
                                    3%
                                 
                                                             | 
                                                        
                    
| 2 | 2 | 39 | 
                                                                 
                                    
                                    2.6%
                                 
                                                             | 
                                                        
                    
| 3 | 3 | 41 | 
                                                                 
                                    
                                    2.7%
                                 
                                                             | 
                                                        
                    
| 4 | 4 | 28 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                                                        
                    
| 5 | 5 | 44 | 
                                                                 
                                    
                                    2.9%
                                 
                                                             | 
                                                        
                    
| 6 | 6 | 32 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    
| 7 | 7 | 30 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    
| 8 | 8 | 27 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                                                        
                    
| 9 | 9 | 3 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 10 | 10 used a lot | 14 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    
| 98 | 98 don't know | 4 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| 99 | 99 no answer | 13 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 453 | 
                                                                 
                                    
                                    29.8%
                                 
                                                             |