| Value | Category | Cases | |
|---|---|---|---|
| 0 | 870 | 
                                    
                                    13.3%
                                 | |
| 1 | 1116 | 
                                    
                                    17%
                                 | |
| 2 | 754 | 
                                    
                                    11.5%
                                 | |
| 3 | 323 | 
                                    
                                    4.9%
                                 | |
| 4 | 99 | 
                                    
                                    1.5%
                                 | |
| 5 | 39 | 
                                    
                                    0.6%
                                 | |
| 6 | 15 | 
                                    
                                    0.2%
                                 | |
| 7 | 7 | 
                                    
                                    0.1%
                                 | |
| 8 | 4 | 
                                    
                                    0.1%
                                 | |
| 9 | 5 | 
                                    
                                    0.1%
                                 | |
| 10 | 2 | 
                                    
                                    0%
                                 | |
| Missing value | 3327 | 
                                    
                                    50.7%
                                 |