| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 | 
                                    
                                    0.9%
                                 | 
| 1 | Shareholding company with shares traded on the stock market | 1 | 
                                    
                                    0.9%
                                 | 
| 2 | Shareholding company with non-traded shares or shares traded privately | 20 | 
                                    
                                    18%
                                 | 
| 3 | Sole proprietorship | 58 | 
                                    
                                    52.3%
                                 | 
| 4 | Partnership | 14 | 
                                    
                                    12.6%
                                 | 
| 5 | Limited partnership | 17 | 
                                    
                                    15.3%
                                 | 
| 6 | Other | 0 | 
                                    
                                    0%
                                 |