| Value | Category | Cases | |
|---|---|---|---|
| 1 | MONTHS | 1362 | 
                                    
                                    18.7%
                                 | 
| 2 | YEARS | 4295 | 
                                    
                                    59%
                                 | 
| 9 | SPECIAL | 1625 | 
                                    
                                    22.3%
                                 | 
| Sysmiss | 23778 |