| Value | Category | Cases | |
|---|---|---|---|
| 0 | < 1 year completed | 0 | 
                                    
                                    0%
                                 | 
| 1 | 9 | 
                                    
                                    42.9%
                                 | |
| 2 | 6 | 
                                    
                                    28.6%
                                 | |
| 4 | 4 | 
                                    
                                    19%
                                 | |
| 7 | 2 | 
                                    
                                    9.5%
                                 | |
| 98 | dk | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 15330 |