| Value | Category | Cases | |
|---|---|---|---|
| 1 | January | 4 | 
                                    
                                    0.4%
                                 | 
| 2 | February | 7 | 
                                    
                                    0.8%
                                 | 
| 3 | March | 22 | 
                                    
                                    2.4%
                                 | 
| 4 | April | 30 | 
                                    
                                    3.3%
                                 | 
| 5 | May | 56 | 
                                    
                                    6.2%
                                 | 
| 6 | June | 75 | 
                                    
                                    8.3%
                                 | 
| 7 | July | 119 | 
                                    
                                    13.1%
                                 | 
| 8 | August | 173 | 
                                    
                                    19.1%
                                 | 
| 9 | September | 233 | 
                                    
                                    25.7%
                                 | 
| 10 | October | 144 | 
                                    
                                    15.9%
                                 | 
| 11 | November | 11 | 
                                    
                                    1.2%
                                 | 
| 12 | December | 6 | 
                                    
                                    0.7%
                                 | 
| 99 | Don't know | 25 | 
                                    
                                    2.8%
                                 | 
| Sysmiss | 11 |