| Value | 
                    Category | 
                                                                            
                                    
                    
                        | 1 hour 20 minutes | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 1 hour 30 minutes | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 1hour | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 1hour 25minutes | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2 Hours | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 22 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 3 hours/week | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 5 hours | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 8 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 90 hrs | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | Almost 1 hour | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | Inservice -(2 hours) | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                            
            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.