| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 366 | 
                                                                 
                                    
                                    3.4%
                                 
                                                             | 
                                                        
                    
| 1 | Never, it always has enough on hand | 3294 | 
                                                                 
                                    
                                    30.9%
                                 
                                                             | 
                                                        
                    
| 2 | Rarely | 4015 | 
                                                                 
                                    
                                    37.6%
                                 
                                                             | 
                                                        
                    
| 3 | Sometimes | 2732 | 
                                                                 
                                    
                                    25.6%
                                 
                                                             | 
                                                        
                    
| 4 | Frequently, at least once every three months | 265 | 
                                                                 
                                    
                                    2.5%
                                 
                                                             |