| Value | Category | Cases | |
|---|---|---|---|
| 1 | 15-17 | 1 | 
                                    
                                    0.3%
                                 | 
| 2 | 18-21 | 23 | 
                                    
                                    7.5%
                                 | 
| 3 | 22-35 | 147 | 
                                    
                                    47.7%
                                 | 
| 4 | 36-59 | 127 | 
                                    
                                    41.2%
                                 | 
| 5 | over60 | 10 | 
                                    
                                    3.2%
                                 | 
| Missing value | 1119 |