| Value | Category | Cases | |
|---|---|---|---|
| -99 | DK | 0 | 
                                    
                                    0%
                                 | 
| -88 | Missing | 0 | 
                                    
                                    0%
                                 | 
| -77 | NA | 2 | 
                                    
                                    0.2%
                                 | 
| 1 | 7 | 
                                    
                                    0.6%
                                 | |
| 2 | 25 | 
                                    
                                    2.2%
                                 | |
| 3 | 54 | 
                                    
                                    4.7%
                                 | |
| 4 | 69 | 
                                    
                                    6%
                                 | |
| 5 | 162 | 
                                    
                                    14%
                                 | |
| 6 | 186 | 
                                    
                                    16.1%
                                 | |
| 7 | 234 | 
                                    
                                    20.3%
                                 | |
| 8 | 236 | 
                                    
                                    20.4%
                                 | |
| 9 | 94 | 
                                    
                                    8.1%
                                 | |
| 10 | 86 | 
                                    
                                    7.4%
                                 | |
| Sysmiss | 4 |