| Value | Category | Cases | |
|---|---|---|---|
| 0 | 197 | 
                                    
                                    19.7%
                                 | |
| 1 | 736 | 
                                    
                                    73.7%
                                 | |
| 4 | 14 | 
                                    
                                    1.4%
                                 | |
| 6 | 2 | 
                                    
                                    0.2%
                                 | |
| 7 | 29 | 
                                    
                                    2.9%
                                 | |
| 8 | 1 | 
                                    
                                    0.1%
                                 | |
| 9 | 19 | 
                                    
                                    1.9%
                                 | |
| Missing value | 2345 |