| Value | Category | Cases | |
|---|---|---|---|
| 3 | 7 | 
                                
                                0.2%
                             | |
| 4 | 6 | 
                                
                                0.1%
                             | |
| 5 | 8 | 
                                
                                0.2%
                             | |
| 6 | 7 | 
                                
                                0.2%
                             | |
| 95 | Missing | 0 | 
                                
                                0%
                             | 
| 97 | Refusal | 0 | 
                                
                                0%
                             | 
| 98 | Don't know | 0 | 
                                
                                0%
                             | 
| 99 | Not Applicable | 4312 | 
                                
                                99.4%
                             |