| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 | 
                                    
                                    1.9%
                                 | 
| -7 | Establishment was not in business | 1 | 
                                    
                                    0.3%
                                 | 
| 1 | Yes | 48 | 
                                    
                                    15.4%
                                 | 
| 2 | No | 256 | 
                                    
                                    82.3%
                                 |