| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2 | 
                                    
                                    0.7%
                                 | |
| 2 | 259 | 
                                    
                                    84.4%
                                 | |
| 3 | 22 | 
                                    
                                    7.2%
                                 | |
| 4 | 10 | 
                                    
                                    3.3%
                                 | |
| 5 | 7 | 
                                    
                                    2.3%
                                 | |
| 6 | 4 | 
                                    
                                    1.3%
                                 | |
| 7 | 2 | 
                                    
                                    0.7%
                                 | |
| 8 | 1 | 
                                    
                                    0.3%
                                 | |
| Sysmiss | 1387 |