| Value | Category | Cases | |
|---|---|---|---|
| 1 | January | 13 | 
                                    
                                    2.2%
                                 | 
| 2 | February | 14 | 
                                    
                                    2.4%
                                 | 
| 3 | March | 10 | 
                                    
                                    1.7%
                                 | 
| 4 | April | 6 | 
                                    
                                    1%
                                 | 
| 5 | May | 3 | 
                                    
                                    0.5%
                                 | 
| 6 | June | 357 | 
                                    
                                    60.8%
                                 | 
| 7 | July | 43 | 
                                    
                                    7.3%
                                 | 
| 8 | August | 26 | 
                                    
                                    4.4%
                                 | 
| 9 | September | 18 | 
                                    
                                    3.1%
                                 | 
| 10 | October | 14 | 
                                    
                                    2.4%
                                 | 
| 11 | November | 8 | 
                                    
                                    1.4%
                                 | 
| 12 | December | 9 | 
                                    
                                    1.5%
                                 | 
| 98 | Don't remember the month | 66 | 
                                    
                                    11.2%
                                 | 
| 99 | Don't remember | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 225 |