| Value | Category | Cases | |
|---|---|---|---|
| 0 | 00 not used at all | 459 | 
                                                                 
                                    
                                    30.4%
                                 
                                                             | 
                                                        
                    
| 1 | 01 | 76 | 
                                                                 
                                    
                                    5%
                                 
                                                             | 
                                                        
                    
| 2 | 02 | 127 | 
                                                                 
                                    
                                    8.4%
                                 
                                                             | 
                                                        
                    
| 3 | 03 | 120 | 
                                                                 
                                    
                                    7.9%
                                 
                                                             | 
                                                        
                    
| 4 | 04 | 58 | 
                                                                 
                                    
                                    3.8%
                                 
                                                             | 
                                                        
                    
| 5 | 05 | 107 | 
                                                                 
                                    
                                    7.1%
                                 
                                                             | 
                                                        
                    
| 6 | 06 | 55 | 
                                                                 
                                    
                                    3.6%
                                 
                                                             | 
                                                        
                    
| 7 | 07 | 34 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    
| 8 | 08 | 25 | 
                                                                 
                                    
                                    1.7%
                                 
                                                             | 
                                                        
                    
| 9 | 09 | 2 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 10 | 10 used a lot | 13 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    
| 98 | 98 don't know | 1 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 99 | 99 no answer | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 434 | 
                                                                 
                                    
                                    28.7%
                                 
                                                             |