| Value | Category | Cases | |
|---|---|---|---|
| 1 | Younger than 36 years | 8381 | 
                                    
                                    8.7%
                                 | 
| 2 | 36 – 40 years | 22043 | 
                                    
                                    22.8%
                                 | 
| 3 | 41 – 45 years | 32539 | 
                                    
                                    33.6%
                                 | 
| 4 | 46 – 50 years | 23796 | 
                                    
                                    24.6%
                                 | 
| 5 | 51 years or older | 9980 | 
                                    
                                    10.3%
                                 | 
| 7 | N/A | 48 | |
| 8 | Invalid | 145 | |
| 9 | Missing | 5100 |