| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| -4 | Too many to count | 19 | 
                                    
                                    13%
                                 | 
| 0 | 14 | 
                                    
                                    9.6%
                                 | |
| 1 | 24 | 
                                    
                                    16.4%
                                 | |
| 2 | 23 | 
                                    
                                    15.8%
                                 | |
| 3 | 24 | 
                                    
                                    16.4%
                                 | |
| 4 | 18 | 
                                    
                                    12.3%
                                 | |
| 5 | 16 | 
                                    
                                    11%
                                 | |
| 6 | 6 | 
                                    
                                    4.1%
                                 | |
| 8 | 1 | 
                                    
                                    0.7%
                                 | |
| 10 | 1 | 
                                    
                                    0.7%
                                 | |
| Sysmiss | 4 |