| Value | Category | Cases | |
|---|---|---|---|
| 0 | < 1 year completed | 8 | 
                                    
                                    18.6%
                                 | 
| 1 | 6 | 
                                    
                                    14%
                                 | |
| 2 | 4 | 
                                    
                                    9.3%
                                 | |
| 3 | 5 | 
                                    
                                    11.6%
                                 | |
| 4 | 3 | 
                                    
                                    7%
                                 | |
| 5 | 2 | 
                                    
                                    4.7%
                                 | |
| 6 | 1 | 
                                    
                                    2.3%
                                 | |
| 7 | 1 | 
                                    
                                    2.3%
                                 | |
| 8 | 5 | 
                                    
                                    11.6%
                                 | |
| 9 | 4 | 
                                    
                                    9.3%
                                 | |
| 10 | 2 | 
                                    
                                    4.7%
                                 | |
| 11 | 1 | 
                                    
                                    2.3%
                                 | |
| 12 | 1 | 
                                    
                                    2.3%
                                 | |
| 98 | dk | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 6349 |