| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 month | 1 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 2 | 2 months | 9 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 3 | 3 months | 3 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 4 | 4 months | 6 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 5 | 5 months | 7 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 6 | 6 months | 13 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 7 | 7 months | 8 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 8 | 8 months | 11 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 9 | 9 months | 10 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 10 | 10 months | 22 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| 11 | 11 months | 22 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| 12 | 12 months | 153 | 
                                                                 
                                    
                                    2.4%
                                 
                                                             | 
                                                        
                    
| 13 | 13 months | 98 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    
| 14 | 14 months | 64 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    
| 15 | 15 months | 33 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    
| -8 | other error | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| -7 | filter error | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| -3 | inapplicable | 5937 | 
                                                                 
                                    
                                    92.7%
                                 
                                                             | 
                                                        
                    
| -2 | no answer | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| -1 | does not know | 5 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             |