| Value | Category | Cases | |
|---|---|---|---|
| 0 | < 1 year completed | 4 | 
                                    
                                    7%
                                 | 
| 1 | 20 | 
                                    
                                    35.1%
                                 | |
| 2 | 10 | 
                                    
                                    17.5%
                                 | |
| 3 | 6 | 
                                    
                                    10.5%
                                 | |
| 4 | 9 | 
                                    
                                    15.8%
                                 | |
| 5 | 2 | 
                                    
                                    3.5%
                                 | |
| 6 | 2 | 
                                    
                                    3.5%
                                 | |
| 9 | 2 | 
                                    
                                    3.5%
                                 | |
| 12 | 2 | 
                                    
                                    3.5%
                                 | |
| 98 | dk | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 15294 |