| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 | 
                                    
                                    0%
                                 | |
| 1 | 28 | 
                                    
                                    0.9%
                                 | |
| 2 | 21 | 
                                    
                                    0.7%
                                 | |
| 3 | 6 | 
                                    
                                    0.2%
                                 | |
| 4 | 3 | 
                                    
                                    0.1%
                                 | |
| 5 | 1 | 
                                    
                                    0%
                                 | |
| 12 | 1 | 
                                    
                                    0%
                                 | |
| Missing value | 3122 | 
                                    
                                    98.1%
                                 |