| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 14 | 
                                    
                                    16.5%
                                 | 
| -8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 6 | 3 | 
                                    
                                    3.5%
                                 | |
| 7 | 1 | 
                                    
                                    1.2%
                                 | |
| 8 | 5 | 
                                    
                                    5.9%
                                 | |
| 10 | 7 | 
                                    
                                    8.2%
                                 | |
| 11 | 28 | 
                                    
                                    32.9%
                                 | |
| 12 | 23 | 
                                    
                                    27.1%
                                 | |
| 13 | 4 | 
                                    
                                    4.7%
                                 | |
| Sysmiss | 870 |