| Value | Category | Cases | |
|---|---|---|---|
| 0 | 606 | 
                                    
                                    18.2%
                                 | |
| 1 | 69 | 
                                    
                                    2.1%
                                 | |
| 2 | 108 | 
                                    
                                    3.3%
                                 | |
| 3 | 171 | 
                                    
                                    5.1%
                                 | |
| 4 | 191 | 
                                    
                                    5.7%
                                 | |
| 5 | 267 | 
                                    
                                    8%
                                 | |
| 6 | 319 | 
                                    
                                    9.6%
                                 | |
| 7 | 1592 | 
                                    
                                    47.9%
                                 | |
| Missing value | 20 |