| Value | Category | Cases | |
|---|---|---|---|
| 1 | 18-21 | 13 | 
                                    
                                    9.6%
                                 | 
| 2 | 22-35 | 55 | 
                                    
                                    40.7%
                                 | 
| 3 | 36-59 | 63 | 
                                    
                                    46.7%
                                 | 
| 4 | over60 | 4 | 
                                    
                                    3%
                                 | 
| Missing value | 1292 |