| Value | Category | Cases | |
|---|---|---|---|
| 0 | 423 | 
                                    
                                    44.2%
                                 | |
| 1 | 336 | 
                                    
                                    35.1%
                                 | |
| 2 | 1 | 
                                    
                                    0.1%
                                 | |
| 4 | 176 | 
                                    
                                    18.4%
                                 | |
| 7 | 20 | 
                                    
                                    2.1%
                                 | |
| Missing value | 2387 |