| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 | 
                                    
                                    0.3%
                                 | |
| 1 | Not at all | 4 | 
                                    
                                    1.4%
                                 | 
| 2 | 2 | 
                                    
                                    0.7%
                                 | |
| 3 | 7 | 
                                    
                                    2.4%
                                 | |
| 4 | 8 | 
                                    
                                    2.7%
                                 | |
| 5 | 26 | 
                                    
                                    8.9%
                                 | |
| 6 | 60 | 
                                    
                                    20.5%
                                 | |
| 7 | 50 | 
                                    
                                    17.1%
                                 | |
| 8 | 55 | 
                                    
                                    18.8%
                                 | |
| 9 | 26 | 
                                    
                                    8.9%
                                 | |
| 10 | Very much | 40 | 
                                    
                                    13.7%
                                 | 
| 11 | Don't know | 13 | 
                                    
                                    4.5%
                                 | 
| Sysmiss | 9 |