| Value | Category | Cases | |
|---|---|---|---|
| 4 | 1 | 
                                
                                0%
                             | |
| 5 | 3 | 
                                
                                0.1%
                             | |
| 7 | 6 | 
                                
                                0.1%
                             | |
| 8 | 7 | 
                                
                                0.1%
                             | |
| 9 | 9 | 
                                
                                0.2%
                             | |
| 10 | 11 | 
                                
                                0.2%
                             | |
| 11 | 7 | 
                                
                                0.1%
                             | |
| 12 | 32 | 
                                
                                0.6%
                             | |
| 13 | 58 | 
                                
                                1.1%
                             | |
| 14 | 134 | 
                                
                                2.5%
                             | |
| 15 | 241 | 
                                
                                4.6%
                             | |
| 16 | 431 | 
                                
                                8.1%
                             | |
| 17 | 316 | 
                                
                                6%
                             | |
| 18 | 236 | 
                                
                                4.5%
                             | |
| 19 | 91 | 
                                
                                1.7%
                             | |
| 20 | 27 | 
                                
                                0.5%
                             | |
| 21 | 7 | 
                                
                                0.1%
                             | |
| 95 | Missing | 3 | 
                                
                                0.1%
                             | 
| 96 | Other | 0 | 
                                
                                0%
                             | 
| 97 | Refusal | 1 | 
                                
                                0%
                             | 
| 98 | Don't know | 2 | 
                                
                                0%
                             | 
| 99 | N/A | 3666 | 
                                
                                69.3%
                             |