| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 0 | No specific period | 3 | 5316 | 
                                                                 
                                    
                                    17%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 2 | 1 | 1565 | 
                                                                 
                                    
                                    5%
                                 
                                                             | 
                            
                        
                        
                            
                    |
| 3 | 1 | 1683 | 
                                                                 
                                    
                                    5.4%
                                 
                                                             | 
                            
                        
                        
                            
                    |
| 9 | 3 | 7842 | 
                                                                 
                                    
                                    25.1%
                                 
                                                             | 
                            
                        
                        
                            
                    |
| 12 | 6 | 12864 | 
                                                                 
                                    
                                    41.2%
                                 
                                                             | 
                            
                        
                        
                            
                    |
| 48 | 1 | 1975 | 
                                                                 
                                    
                                    6.3%
                                 
                                                             | 
                            
                        
                        
                            
                    |
| Sysmiss | 15014 | 29886826 |