| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 12 | 
                                    
                                    3%
                                 | 
| -8 | Refusal (spontaneous) | 4 | 
                                    
                                    1%
                                 | 
| 0 | 55 | 
                                    
                                    13.7%
                                 | |
| 1 | 11 | 
                                    
                                    2.7%
                                 | |
| 2 | 9 | 
                                    
                                    2.2%
                                 | |
| 3 | 4 | 
                                    
                                    1%
                                 | |
| 4 | 1 | 
                                    
                                    0.2%
                                 | |
| 5 | 3 | 
                                    
                                    0.7%
                                 | |
| 6 | 6 | 
                                    
                                    1.5%
                                 | |
| 7 | 16 | 
                                    
                                    4%
                                 | |
| 8 | 17 | 
                                    
                                    4.2%
                                 | |
| 9 | 15 | 
                                    
                                    3.7%
                                 | |
| 10 | 17 | 
                                    
                                    4.2%
                                 | |
| 11 | 6 | 
                                    
                                    1.5%
                                 | |
| 12 | 10 | 
                                    
                                    2.5%
                                 | |
| 13 | 8 | 
                                    
                                    2%
                                 | |
| 14 | 6 | 
                                    
                                    1.5%
                                 | |
| 15 | 11 | 
                                    
                                    2.7%
                                 | |
| 16 | 14 | 
                                    
                                    3.5%
                                 | |
| 17 | 15 | 
                                    
                                    3.7%
                                 | |
| 18 | 26 | 
                                    
                                    6.5%
                                 | |
| 19 | 54 | 
                                    
                                    13.4%
                                 | |
| 20 | 15 | 
                                    
                                    3.7%
                                 | |
| 21 | 11 | 
                                    
                                    2.7%
                                 | |
| 22 | 14 | 
                                    
                                    3.5%
                                 | |
| 23 | 9 | 
                                    
                                    2.2%
                                 | |
| 24 | 6 | 
                                    
                                    1.5%
                                 | |
| 25 | 9 | 
                                    
                                    2.2%
                                 | |
| 26 | 2 | 
                                    
                                    0.5%
                                 | |
| 27 | 2 | 
                                    
                                    0.5%
                                 | |
| 28 | 3 | 
                                    
                                    0.7%
                                 | |
| 30 | 1 | 
                                    
                                    0.2%
                                 | |
| 35 | 1 | 
                                    
                                    0.2%
                                 | |
| 37 | 1 | 
                                    
                                    0.2%
                                 | |
| 39 | 1 | 
                                    
                                    0.2%
                                 | |
| 40 | 5 | 
                                    
                                    1.2%
                                 | |
| 54 | 1 | 
                                    
                                    0.2%
                                 | |
| 60 | 1 | 
                                    
                                    0.2%
                                 |