| Value | Category | Cases | |
|---|---|---|---|
| 0 | 45 | 
                                    
                                    0.9%
                                 | |
| 1 | 515 | 
                                    
                                    10.7%
                                 | |
| 2 | 94 | 
                                    
                                    2%
                                 | |
| 3 | 14 | 
                                    
                                    0.3%
                                 | |
| 4 | 5 | 
                                    
                                    0.1%
                                 | |
| 5 | 2 | 
                                    
                                    0%
                                 | |
| 11 | 1 | 
                                    
                                    0%
                                 | |
| Missing value | 4134 | 
                                    
                                    85.9%
                                 |