| Value | Category | Cases | |
|---|---|---|---|
| 0 | 331 | 
                                    
                                    31.1%
                                 | |
| 1 | 436 | 
                                    
                                    41%
                                 | |
| 2 | 208 | 
                                    
                                    19.6%
                                 | |
| 3 | 64 | 
                                    
                                    6%
                                 | |
| 4 | 18 | 
                                    
                                    1.7%
                                 | |
| 5 | 4 | 
                                    
                                    0.4%
                                 | |
| 6 | 1 | 
                                    
                                    0.1%
                                 | |
| 7 | 1 | 
                                    
                                    0.1%
                                 | |
| Missing value | 364 |