| Value | Category | Cases | |
|---|---|---|---|
| 0 | 6 | 
                                    
                                    0.2%
                                 | |
| 1 | 107 | 
                                    
                                    3.9%
                                 | |
| 2 | 264 | 
                                    
                                    9.5%
                                 | |
| 3 | 523 | 
                                    
                                    18.8%
                                 | |
| 4 | 553 | 
                                    
                                    19.9%
                                 | |
| 5 | 484 | 
                                    
                                    17.4%
                                 | |
| 6 | 380 | 
                                    
                                    13.7%
                                 | |
| 7 | 267 | 
                                    
                                    9.6%
                                 | |
| 8 | 131 | 
                                    
                                    4.7%
                                 | |
| 9 | 47 | 
                                    
                                    1.7%
                                 | |
| 10 | 15 | 
                                    
                                    0.5%
                                 | |
| 11 | 2 | 
                                    
                                    0.1%
                                 | |
| Missing value | 564 |