| Value | Category | Cases | |
|---|---|---|---|
| 0-6 months | 3 | 
                                                                 
                                    
                                    13%
                                 
                                                             | 
                                                        
                    |
| 6-12 months | 6 | 
                                                                 
                                    
                                    26.1%
                                 
                                                             | 
                                                        
                    |
| Between 1 and 2 years | 1 | 
                                                                 
                                    
                                    4.3%
                                 
                                                             | 
                                                        
                    |
| Between 2 and 5 years | 1 | 
                                                                 
                                    
                                    4.3%
                                 
                                                             | 
                                                        
                    |
| Don't know | 6 | 
                                                                 
                                    
                                    26.1%
                                 
                                                             | 
                                                        
                    |
| More than 5 years | 5 | 
                                                                 
                                    
                                    21.7%
                                 
                                                             | 
                                                        
                    |
| Refuse to answer | 1 | 
                                                                 
                                    
                                    4.3%
                                 
                                                             |