| Value | Category | Cases | |
|---|---|---|---|
| 1 | Own preparation | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 2 | Bought | 1235 | 
                                                                 
                                    
                                    94.6%
                                 
                                                             | 
                                                        
                    
| 3 | Received for free | 70 | 
                                                                 
                                    
                                    5.4%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 9937 |