| Value | Category | Cases | |
|---|---|---|---|
| 0 | 280 | 
                                    
                                    26.2%
                                 | |
| 1 | 490 | 
                                    
                                    45.9%
                                 | |
| 2 | 204 | 
                                    
                                    19.1%
                                 | |
| 3 | 77 | 
                                    
                                    7.2%
                                 | |
| 4 | 11 | 
                                    
                                    1%
                                 | |
| 5 | 6 | 
                                    
                                    0.6%
                                 | |
| Missing value | 359 |