| Value | Category | Cases | |
|---|---|---|---|
| 0 | 454 | 
                                    
                                    18.4%
                                 | |
| 1 | 1633 | 
                                    
                                    66.2%
                                 | |
| 2 | 4 | 
                                    
                                    0.2%
                                 | |
| 4 | 2 | 
                                    
                                    0.1%
                                 | |
| 5 | 5 | 
                                    
                                    0.2%
                                 | |
| 6 | 1 | 
                                    
                                    0%
                                 | |
| 7 | 367 | 
                                    
                                    14.9%
                                 | |
| 8 | 2 | 
                                    
                                    0.1%
                                 | |
| Missing value | 875 |