| Value | Category | Cases | |
|---|---|---|---|
| 0 | 454 | 
                                    
                                    35%
                                 | |
| 1 | 772 | 
                                    
                                    59.6%
                                 | |
| 4 | 9 | 
                                    
                                    0.7%
                                 | |
| 5 | 3 | 
                                    
                                    0.2%
                                 | |
| 6 | 1 | 
                                    
                                    0.1%
                                 | |
| 7 | 38 | 
                                    
                                    2.9%
                                 | |
| 9 | 19 | 
                                    
                                    1.5%
                                 | |
| Missing value | 2047 |