| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 | 
                                    
                                    1.4%
                                 | |
| 1 | 70 | 
                                    
                                    95.9%
                                 | |
| 7 | 2 | 
                                    
                                    2.7%
                                 | |
| Missing value | 3270 |