| Value | Category | Cases | |
|---|---|---|---|
| 0 | 138 | 
                                    
                                    25.8%
                                 | |
| 1 | 353 | 
                                    
                                    66.1%
                                 | |
| 2 | 35 | 
                                    
                                    6.6%
                                 | |
| 3 | 6 | 
                                    
                                    1.1%
                                 | |
| 8 | 1 | 
                                    
                                    0.2%
                                 | |
| 9 | 1 | 
                                    
                                    0.2%
                                 | |
| Sysmiss | 966 |