| Value | Category | Cases | |
|---|---|---|---|
| 1 | In less than 6 months | 304 | 
                                    
                                    22.6%
                                 | 
| 2 | In 6 to 12 months | 351 | 
                                    
                                    26.1%
                                 | 
| 3 | In more than 12 months | 197 | 
                                    
                                    14.6%
                                 | 
| 4 | Don't know yet | 495 | 
                                    
                                    36.7%
                                 | 
| Sysmiss | 8128 |