| Value | Category | Cases | |
|---|---|---|---|
| 1 | months | 10 | 
                                    
                                    3.1%
                                 | 
| 2 | years | 245 | 
                                    
                                    77%
                                 | 
| 9 | special answers | 63 | 
                                    
                                    19.8%
                                 | 
| Sysmiss | 15033 |