| Value | Category | Cases | |
|---|---|---|---|
| 1 | Always know | 20850 | 
                                
                                59.3%
                             | 
| 2 | Sometimes know | 6104 | 
                                
                                17.3%
                             | 
| 3 | Never know | 1168 | 
                                
                                3.3%
                             | 
| 5 | Missing | 2 | 
                                
                                0%
                             | 
| 8 | Dont know | 1 | 
                                
                                0%
                             | 
| 9 | Not Applicable | 7064 | 
                                
                                20.1%
                             |