| Value | Category | Cases | |
|---|---|---|---|
| -99 | DK | 0 | 
                                    
                                    0%
                                 | 
| -88 | Missing | 0 | 
                                    
                                    0%
                                 | 
| -77 | NA | 5 | 
                                    
                                    0.4%
                                 | 
| 2 | 1 | 
                                    
                                    0.1%
                                 | |
| 4 | 5 | 
                                    
                                    0.4%
                                 | |
| 5 | 11 | 
                                    
                                    1%
                                 | |
| 6 | 20 | 
                                    
                                    1.7%
                                 | |
| 7 | 69 | 
                                    
                                    6%
                                 | |
| 8 | 164 | 
                                    
                                    14.2%
                                 | |
| 9 | 261 | 
                                    
                                    22.7%
                                 | |
| 10 | 616 | 
                                    
                                    53.5%
                                 | |
| Sysmiss | 7 |