| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 36 | 
                                    
                                    11.6%
                                 | 
| -8 | Refusal (spontaneous) | 15 | 
                                    
                                    4.8%
                                 | 
| 0 | 2 | 
                                    
                                    0.6%
                                 | |
| 1 | 1 | 
                                    
                                    0.3%
                                 | |
| 2 | 202 | 
                                    
                                    65%
                                 | |
| 3 | 7 | 
                                    
                                    2.3%
                                 | |
| 4 | 2 | 
                                    
                                    0.6%
                                 | |
| 5 | 3 | 
                                    
                                    1%
                                 | |
| 6 | 2 | 
                                    
                                    0.6%
                                 | |
| 7 | 7 | 
                                    
                                    2.3%
                                 | |
| 8 | 3 | 
                                    
                                    1%
                                 | |
| 9 | 2 | 
                                    
                                    0.6%
                                 | |
| 10 | 7 | 
                                    
                                    2.3%
                                 | |
| 11 | 1 | 
                                    
                                    0.3%
                                 | |
| 12 | 4 | 
                                    
                                    1.3%
                                 | |
| 13 | 3 | 
                                    
                                    1%
                                 | |
| 14 | 1 | 
                                    
                                    0.3%
                                 | |
| 15 | 1 | 
                                    
                                    0.3%
                                 | |
| 16 | 2 | 
                                    
                                    0.6%
                                 | |
| 17 | 1 | 
                                    
                                    0.3%
                                 | |
| 19 | 2 | 
                                    
                                    0.6%
                                 | |
| 20 | 3 | 
                                    
                                    1%
                                 | |
| 23 | 2 | 
                                    
                                    0.6%
                                 | |
| 26 | 1 | 
                                    
                                    0.3%
                                 | |
| 29 | 1 | 
                                    
                                    0.3%
                                 |