| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0-5 | 114 | 
                                    
                                    7.3%
                                 | 
| 2 | 6-11 | 149 | 
                                    
                                    9.5%
                                 | 
| 3 | 12-23 | 307 | 
                                    
                                    19.6%
                                 | 
| 4 | 24-35 | 291 | 
                                    
                                    18.6%
                                 | 
| 5 | 36-47 | 323 | 
                                    
                                    20.7%
                                 | 
| 6 | 48-59 | 322 | 
                                    
                                    20.6%
                                 | 
| Sysmiss | 58 | 
                                    
                                    3.7%
                                 |