| Value | Category | Cases | |
|---|---|---|---|
| 1 | Collected | 1 | 
                                                                 
                                    
                                    25%
                                 
                                                             | 
                                                        
                    
| 2 | Purchased | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 3 | Aid agency | 1 | 
                                                                 
                                    
                                    25%
                                 
                                                             | 
                                                        
                    
| 4 | Other(specify) | 2 | 
                                                                 
                                    
                                    50%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 4176 |