| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1079 | 
                                    
                                    91.7%
                                 | 
| 2 | Once or twice | 21 | 
                                    
                                    1.8%
                                 | 
| 3 | A few times | 22 | 
                                    
                                    1.9%
                                 | 
| 4 | Often | 50 | 
                                    
                                    4.2%
                                 | 
| 5 | Don't know | 2 | 
                                    
                                    0.2%
                                 | 
| 99 | Missing data | 3 | 
                                    
                                    0.3%
                                 |