| Value | Category | Cases | |
|---|---|---|---|
| 0 | 2520 | 
                                    
                                    75.7%
                                 | |
| 1 | 447 | 
                                    
                                    13.4%
                                 | |
| 2 | 226 | 
                                    
                                    6.8%
                                 | |
| 3 | 81 | 
                                    
                                    2.4%
                                 | |
| 4 | 39 | 
                                    
                                    1.2%
                                 | |
| 5 | 11 | 
                                    
                                    0.3%
                                 | |
| 7 | 7 | 
                                    
                                    0.2%
                                 | |
| Missing value | 12 |