| Value | Category | Cases | |
|---|---|---|---|
| 1 | 4 | 
                                    
                                    7.4%
                                 | |
| 2 | 1 | 
                                    
                                    1.9%
                                 | |
| 3 | 1 | 
                                    
                                    1.9%
                                 | |
| 4 | 2 | 
                                    
                                    3.7%
                                 | |
| Missing value | 46 | 
                                    
                                    85.2%
                                 |