| Value | Category | 
                                    
                    
                        | 1 | 1. More often | 
                                    
                    
                        | 2 | 2. About the same as now | 
                                    
                    
                        | 3 | 3. Less often | 
                                    
                    
                        | 4 | 4. Never | 
                                    
                    
                        | 5 | 5. Don't know | 
                                    
                    
                        | 6 | 6. Refused | 
                                    
                    
                        | 7 | 7. Not applicable | 
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.