| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 44 | 
                                                                 
                                    
                                    10.2%
                                 
                                                             | 
                                                        
                    
| 1 | January | 75 | 
                                                                 
                                    
                                    17.4%
                                 
                                                             | 
                                                        
                    
| 2 | February | 39 | 
                                                                 
                                    
                                    9%
                                 
                                                             | 
                                                        
                    
| 3 | March | 33 | 
                                                                 
                                    
                                    7.6%
                                 
                                                             | 
                                                        
                    
| 4 | April | 30 | 
                                                                 
                                    
                                    6.9%
                                 
                                                             | 
                                                        
                    
| 5 | May | 19 | 
                                                                 
                                    
                                    4.4%
                                 
                                                             | 
                                                        
                    
| 6 | June | 30 | 
                                                                 
                                    
                                    6.9%
                                 
                                                             | 
                                                        
                    
| 7 | July | 35 | 
                                                                 
                                    
                                    8.1%
                                 
                                                             | 
                                                        
                    
| 8 | August | 35 | 
                                                                 
                                    
                                    8.1%
                                 
                                                             | 
                                                        
                    
| 9 | September | 24 | 
                                                                 
                                    
                                    5.6%
                                 
                                                             | 
                                                        
                    
| 10 | October | 27 | 
                                                                 
                                    
                                    6.3%
                                 
                                                             | 
                                                        
                    
| 11 | November | 23 | 
                                                                 
                                    
                                    5.3%
                                 
                                                             | 
                                                        
                    
| 12 | December | 18 | 
                                                                 
                                    
                                    4.2%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 10240 |