| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 99 | 
                                    
                                    3.7%
                                 | 
| 1 | Yes, fully | 2215 | 
                                    
                                    82.1%
                                 | 
| 2 | Yes, partially | 227 | 
                                    
                                    8.4%
                                 | 
| 3 | No | 156 | 
                                    
                                    5.8%
                                 |