| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 0 | Never | 380 | 
                                                                 
                                    
                                    31.7%
                                 
                                                             | 
                                                        
                    
| 1 | Just once or twice | 341 | 
                                                                 
                                    
                                    28.4%
                                 
                                                             | 
                                                        
                    
| 2 | Several times | 247 | 
                                                                 
                                    
                                    20.6%
                                 
                                                             | 
                                                        
                    
| 3 | Many times | 132 | 
                                                                 
                                    
                                    11%
                                 
                                                             | 
                                                        
                    
| 4 | Always | 96 | 
                                                                 
                                    
                                    8%
                                 
                                                             | 
                                                        
                    
| 8 | Refused | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 9 | Don't Know | 4 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             |