| Value | Category | Cases | |
|---|---|---|---|
| 1 | <2 | 13 | 
                                    
                                    14.9%
                                 | 
| 2 | 2-3 | 13 | 
                                    
                                    14.9%
                                 | 
| 3 | 4-5 | 21 | 
                                    
                                    24.1%
                                 | 
| 4 | 6-7 | 13 | 
                                    
                                    14.9%
                                 | 
| 5 | 8-9 | 12 | 
                                    
                                    13.8%
                                 | 
| 6 | 10+ | 15 | 
                                    
                                    17.2%
                                 |