| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 not used at all | 339 | 
                                                                 
                                    
                                    22.3%
                                 
                                                             | 
                                                        
                    
| 1 | 1 | 48 | 
                                                                 
                                    
                                    3.2%
                                 
                                                             | 
                                                        
                    
| 2 | 2 | 86 | 
                                                                 
                                    
                                    5.7%
                                 
                                                             | 
                                                        
                    
| 3 | 3 | 77 | 
                                                                 
                                    
                                    5.1%
                                 
                                                             | 
                                                        
                    
| 4 | 4 | 73 | 
                                                                 
                                    
                                    4.8%
                                 
                                                             | 
                                                        
                    
| 5 | 5 | 119 | 
                                                                 
                                    
                                    7.8%
                                 
                                                             | 
                                                        
                    
| 6 | 6 | 74 | 
                                                                 
                                    
                                    4.9%
                                 
                                                             | 
                                                        
                    
| 7 | 7 | 78 | 
                                                                 
                                    
                                    5.1%
                                 
                                                             | 
                                                        
                    
| 8 | 8 | 111 | 
                                                                 
                                    
                                    7.3%
                                 
                                                             | 
                                                        
                    
| 9 | 9 | 18 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    
| 10 | 10 used a lot | 43 | 
                                                                 
                                    
                                    2.8%
                                 
                                                             | 
                                                        
                    
| 98 | 98 don't know | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 99 | 99 no answer | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 453 | 
                                                                 
                                    
                                    29.8%
                                 
                                                             |