| Value | Category | Cases | |
|---|---|---|---|
| 1 | 19 | 
                                    
                                    0.7%
                                 | |
| 2 | 361 | 
                                    
                                    12.7%
                                 | |
| 3 | 579 | 
                                    
                                    20.4%
                                 | |
| 4 | 1873 | 
                                    
                                    66.1%
                                 | |
| Missing value | 4019 |