| Value | Category | 
                                    
                    
                        | 1 | 1 to 4 workers | 
                                    
                    
                        | 2 | 5 to 9 workers3 | 
                                    
                    
                        | 3 | 10 to 19 workers | 
                                    
                    
                        | 4 | 20 to 49 workers | 
                                    
                    
                        | 5 | 50 to 99 workers | 
                                    
                    
                        | 6 | 100 or more workers | 
                                    
                    
                        | 7 | don’t know | 
                            
            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.